OBD-II Code U1733: Blue&Me / Convergence Module Communication Failure

What Does U1733 Mean?

U1733 means your car's Body Control Module (BCM) has lost communication with the Blue&Me module (also called the Convergence Telematic Module). When this module drops off the CAN bus network, Bluetooth and USB functions fail, the odometer flashes continuously, and the module begins draining the battery.

Technical definition: The official definition for U1733 is "Lost communication with Convergence Telematic Module (CTM)". Variants like U1733-87 or U1733-86 indicate the Body Control Module (BCM) no longer detects the Blue&Me module on the CAN bus network.

Can I Drive With U1733?

Yes, But With Caution. Yes, the vehicle is safe to drive as this code does not affect core functions like the engine, brakes, or steering. However, the faulty module causes a severe parasitic battery drain, capable of killing a healthy battery in 24-48 hours. This leaves you stranded without warning and permanently shortens your battery's lifespan.

Common Causes

• Internal failure of the Blue&Me module (Very Common) — The main processor or memory chips fail due to heat cycles and vibration, causing the module to crash, drop off the network, and draw power continuously.
• Water Ingress and Corrosion (Common) — On models like the Fiat 500, clogged scuttle drains allow rainwater to drip directly onto the module behind the glovebox, causing fatal short circuits and corrosion.
• Incorrectly Configured Aftermarket Stereo (Common) — Improperly installed aftermarket head units trigger this code. If the CAN bus adapter is incompatible or configured incorrectly, the BCM assumes the original module is missing.
• Corrupted Proxy Alignment (Less Common) — If a module is replaced or the battery voltage drops severely, the BCM's 'proxy alignment' configuration corrupts, 🎬 Watch: How to perform a proxy alignment using MultiECUScan software. flagging a communication error.
• Wiring, Connector, or Ground Faults (Rare) — Damaged CAN bus wires, corroded pins, or a loose ground connection between the BCM and the Blue&Me module physically interrupt the communication signal.

Symptoms

• Flashing odometer/mileage display — The car's network detects a missing module from its proxy alignment list and flashes the odometer to visually signal a network error.
• Battery dies when parked — The faulty module fails to enter sleep mode, continuously drawing 150mA to 1A and killing the battery in 24-48 hours.
• Total Loss of Infotainment Functions — Bluetooth connectivity, USB media playback, voice commands, and steering wheel audio controls completely stop working.

Diagnostic Flowchart

Tap your situation to follow the diagnostic path that matches what you're seeing on this code.

Common Fixes & Costs

• Repair/Remanufacture the Blue&Me Module — Parts: $150-$250, Labor: $0 (DIY) or $100-$150, ~1.5 hr book time (DIY)
• Disconnect Module and Perform Proxy Alignment — Parts: $0, Labor: $100-$150, ~1.0 hr book time (Intermediate)
• Install an Aftermarket Stereo with a CAN Bus Adapter — Parts: $250-$600, Labor: $150-$300, ~2.5 hr book time (DIY)
• Replace with a New Blue&Me Module — Parts: $600-$900, Labor: $150-$250, ~2.0 hr book time (Professional)
  Fiat 500: OEM
  Fiat Punto (Grande): OEM
  Alfa Romeo Giulietta: OEM
• Repair CAN Bus Wiring — Parts: $10-$30, Labor: $200-$400, ~3.0 hr book time (Professional)

Used vs. New Parts: Buying Guide

When a used part is worth it: Buying a used Blue&Me module is not recommended. These units have a very high failure rate, and a used part from a salvaged vehicle is likely to have the same internal defect.

Donor-vehicle mileage cap: roughly under 40000 miles for the part to have meaningful remaining life.

Donor quality checklist:

• Match the part number on your original module exactly, as there are many incompatible hardware versions.
• Avoid parts from vehicles with signs of water damage.
• A used module requires a 'Proxy Alignment' to be programmed to your car.

Decision logic:

• If The goal is the most reliable and cost-effective long-term solution → Have your original module repaired by a specialist. This is cheaper than new and plug-and-play, with no programming needed.
• If Functionality is not needed and the only goal is to stop the battery drain and flashing odometer → Disconnect the module and pay for a one-time proxy alignment to remove it from the network.
• If A used part is the only option due to budget or availability → Accept the high risk of premature failure and factor in the additional cost of a proxy alignment.

Warranty tradeoff: Used parts: 30-90 day warranty. New OEM parts: 1-2 year warranty. Repaired units: Often come with a lifetime warranty from the repair service.

Worst-case if a used part fails: $200-$400 if a used part fails after the warranty period, covering the cost of the faulty used part plus repeat labor and another proxy alignment.

What Happens If You Wait — Timeline

1. 0-2 weeks: Blue&Me module fails internally. Odometer starts flashing, and Bluetooth/USB functions cease. A parasitic drain of 150mA - 1A begins. The car fails to start if left parked for 2-4 days. (MPG impact: 0%% · Added cost: $0-$50 for a single jump start.)
2. 2 weeks - 2 months: Repeated no-start conditions become a major inconvenience. The vehicle's main battery is subjected to frequent deep discharge cycles, causing irreversible internal sulfation. (MPG impact: 0%% · Added cost: $50-$150 in repeated jump starts, towing, or diagnostic fees.)
3. 2-6 months: The original battery's capacity is permanently reduced. It can no longer hold a sufficient charge to survive the parasitic drain overnight. The owner is forced to replace the battery. (MPG impact: 0%% · Added cost: $150-$300 for a new battery, which is now being damaged by the same parasitic drain.)
4. 6+ months: The cycle repeats. The new battery is eventually destroyed by the unabated parasitic drain. Cumulative costs significantly exceed the cost of repairing the original module. (MPG impact: 0%% · Added cost: $400-$700+ in cumulative costs (multiple batteries, diagnostics, towing).)

Cost of Not Fixing It

• 0-1 month: Frequent dead battery, leading to no-start conditions and inconvenience. Loss of Bluetooth/USB functionality. (Added cost: $50-$250 for jump starts or towing services.)
• 1-6 months: Permanent damage to the vehicle's battery from repeated deep discharge cycles, requiring premature replacement. (Added cost: $150-$550 for a new battery, plus continued risk of being stranded.)
• 6+ months: Ongoing cycle of battery replacements and jump starts. The flashing odometer persists. (Added cost: Cumulative costs of multiple batteries and service calls, potentially exceeding the cost of the actual repair.)

Diagnosis Steps

1. Check and Charge the Battery
   A weak battery causes unpredictable communication errors. Fully charge the battery and load-test it to establish a reliable baseline.
   Tools: Battery charger, Multimeter (Beginner)
2. Perform a Parasitic Draw Test
   Connect a multimeter in series with the negative battery cable. Wait 60 minutes for modules to sleep. A faulty Blue&Me module causes a sustained draw of 150mA to 1A. If the draw drops below 50mA after unplugging the module, you found the culprit.
   Tools: Digital Multimeter with 10A setting (Advanced)
3. Perform a Hard Reset
   Disconnect the negative battery terminal for 30 minutes to force all modules to reboot. This temporarily clears software glitches, though hardware failures will return immediately.
   Tools: 10mm wrench (Beginner)
4. Scan for Codes with Advanced Diagnostics
   Use an OBD-II scanner capable of reading manufacturer-specific codes (like MultiECUScan) to confirm U1733 and check if other modules are offline.
   Tools: Advanced OBD-II Scanner (Intermediate)
5. Locate and Inspect the Blue&Me Module
   Access the module (often behind the glovebox or rear side panel). Visually inspect for water damage, corrosion, and ensure the main connector is secure.
   Tools: Trim removal tools, Socket set (Intermediate)
6. Inspect Fuses
   Check the fuse box for blown fuses related to the radio or telematics systems, which cuts power to the module.
   Tools: Fuse puller, Multimeter (Beginner)
7. Perform a Proxy Alignment
   Attempt a 'Proxy Alignment' using a diagnostic tool. If it fails and lists the 'Convergence Telematic Node' as not found, it proves the module or its wiring is dead.
   Tools: Advanced OBD-II Scanner, Yellow adapter cable (Advanced)
8. Test the CAN Bus Network
   With the battery disconnected, measure resistance between Pin 6 and Pin 14 on the OBD-II port. A reading of 120 Ohms indicates a broken wire or offline terminating resistor; 60 Ohms is healthy.
   Tools: Multimeter (Advanced)
9. Verify CAN Bus Signal Voltage
   Use an oscilloscope to probe the CAN bus lines. CAN High should toggle between 2.5V and 3.5V. CAN Low should toggle between 2.5V and 1.5V. A flat line indicates a bus failure.
   Tools: Oscilloscope (Professional)

When This Code Triggers (Freeze-Frame Conditions)

• System State: Key-On, Engine Off or Running (The Body Control Module (BCM) performs a network check of all configured modules upon ignition activation.)
• Battery Voltage: 11.5V - 14.8V (The code sets as long as there is sufficient voltage to power the BCM.)
• CAN Bus Status: Active (The fault logs when the BCM sends a request to the Blue&Me module's address on the CAN bus and receives no response.)
• Time Since Key-On: 0-10 seconds (The communication check happens immediately after power-on, triggering the flashing odometer instantly.)

Related Codes

• U1733-87 — A more specific version stating the 'Convergence telematics module missing message'. It pinpoints the Blue&Me module as the source of the communication loss.
• B10AA — This BCM code means 'Check configuration' and almost always appears alongside U1733. Fixing the U1733 fault and running a proxy alignment clears B10AA.
• U0019 — Means 'Low-Speed CAN Communication Bus Performance'. If seen with U1733, it suggests a broader network problem, like a wiring short, rather than an isolated module failure.
• P0022 — An engine code ('A' Camshaft Position Timing Over-Retarded). Its appearance with Blue&Me failures is a data error in diagnostic tools. Diagnose the U1733 first.

Climate & Environmental Factors

• Water Ingress / High Humidity: On vehicles like the Fiat 500, cabin leaks from windshield seals or clogged drains allow rainwater to drip directly onto the Blue&Me module, causing short circuits and corrosion.
• Heat Cycles: Repeated heat cycles from normal operation and ambient temperatures contribute to the thermal stress on internal electronic components, leading to eventual failure.

How to Talk to a Mechanic About This Code

Say this: "I have a U1733 code with a flashing odometer and a parasitic battery drain. I suspect the Blue&Me module has failed. I'd like to book a diagnostic appointment to confirm the module is the source of the drain, and I'd like a quote for two options: first, to replace the module and perform a proxy alignment, and second, to simply disconnect the module and perform a proxy alignment to remove it from the network."

This signals to the shop that you have done your research, understand the specific nature of the U1733 fault, and are aware of the necessary 'proxy alignment' procedure. It focuses their diagnostic effort and prevents them from wasting time on misdiagnoses like a bad battery or alternator.

Avoid saying:

• 'My check engine light is on, can you look at it?'
• 'My battery keeps dying, I think I need a new alternator.'
• 'Just fix whatever's wrong, I don't care what it costs.'

Questions to ask before authorizing the repair:

• Did you perform a parasitic draw test, and did the draw disappear when the Blue&Me module was disconnected?
• Does your quoted price for replacing the module include performing the proxy alignment?
• If I provide my own repaired module, what is your labor rate to install it and perform the proxy alignment?
• Have you checked for water leaks or corrosion around the module, particularly the scuttle drains?
• What is the warranty on the new module and the labor for this repair?

Where to Take It: Dealer vs Independent vs Chain

• Dealer: A reliable but very expensive option. They will correctly diagnose and fix the issue but at the highest possible cost. Use if other options are unavailable or if the vehicle is under warranty.
  Best for: Vehicles still under warranty., Complex diagnostics where a guaranteed fix is needed and cost is not the primary concern., Ensuring access to the latest manufacturer-specific tools and software updates.
  Downsides: Significantly higher labor rates and parts costs, often 50-100% more than independent shops., Will only offer a brand new, very expensive module replacement; will not install customer-supplied or repaired parts. (Typical cost: +75% vs. baseline)
• Independent Shop: Best fit for most owners. An independent shop specializing in European or FCA vehicles is the ideal choice. They are familiar with the problem and can offer more cost-effective solutions than the dealer.
  Best for: Out-of-warranty vehicles where cost is a factor., Owners who want more flexible repair options (e.g., installing a repaired module)., Finding a specialist with deep experience in a specific brand (e.g., a Fiat/Alfa specialist).
  Downsides: Shop quality and expertise vary widely. You must verify they have the specific diagnostic software to perform a proxy alignment. (Typical cost: +0% vs. baseline)
• Chain Shop: AVOID. These shops are not equipped for this type of electronic, manufacturer-specific repair. Taking your vehicle here for a U1733 code is likely to waste time and money on incorrect diagnoses.
  Best for: Simple, high-volume jobs like oil changes, tires, and brake pads.
  Downsides: Technicians are very unlikely to have the specialized tools or knowledge for network diagnostics and proxy alignments., High likelihood of misdiagnosis, leading to unnecessary replacement of the battery or alternator. (Typical cost: -10% vs. baseline)

When to Walk Away From the Repair

If the total estimated repair cost to restore full functionality exceeds 40-50% of the car's current private-party value, you should seriously consider lower-cost alternatives or selling the vehicle.

• Car worth $5000, fix is $1200: Walk away from the full dealer repair. The cost is nearly 25% of the car's value. Instead, opt for a ~$300 fix (mail-in repair + indie labor) or a ~$150 fix (disconnect + proxy align).
• Car worth $10000, fix is $1200: Fix it, but not at the dealer. A $1200 repair is only 12% of the car's value, but a mail-in repair is still the smarter financial choice.
• Car worth $3000, fix is $1200: Walk away. The repair cost is 40% of the car's value. The best option is the cheapest one: disconnect the module to stop the battery drain and either ignore the flashing odometer or pay for a proxy alignment.

What Scan Tool You Need for This Code

Minimum: A tool capable of performing a 'Proxy Alignment' on Fiat/Chrysler vehicles. A standard OBD-II code reader is insufficient.

A basic $20 scanner will only read the U1733 code. It cannot communicate with the Body Control Module to perform the mandatory proxy alignment required to stop the odometer from flashing after a repair.

Budget: MultiECUScan (MES) Software + ELM327 Interface (~$85) — This is the gold standard for DIY Fiat/Alfa/Chrysler repair. It allows you to perform the crucial Proxy Alignment, read manufacturer-specific codes from all modules, and is the most powerful tool available for the price.

Mid-range: Foxwell NT510 Elite with FCA Software (~$200) — Provides access to most modules on FCA vehicles and can perform special functions, including Proxy Alignment. Ensure the specific model you buy explicitly lists Fiat Proxy Alignment as a feature.

Professional: Autel MaxiCOM MK808 / MaxiSys MS906BT (~$500-1200) — These professional-grade tools offer full bidirectional control and OEM-level diagnostics. They reliably perform Proxy Alignment on a wide range of FCA vehicles, including newer models with a Security Gateway Module (SGW).

Rent vs buy: You cannot rent a scanner capable of performing a proxy alignment from a typical auto parts store. For a one-time fix, it is more cost-effective to pay an independent shop for one hour of labor to perform the alignment.

How to Clear the Code After You Fix It

1. Reconnect the repaired/new module.
2. Reconnect the vehicle's battery.
3. Use an advanced scan tool (like MultiECUScan) to perform a 'Proxy Alignment'. This is required to stop the odometer from flashing.
4. Clear any remaining fault codes from all modules.

Drive cycle (~30 minutes): A standard drive cycle is not required to clear the U1733 code itself, but it is necessary to set emissions readiness monitors if the battery was disconnected.

Readiness monitors affected: All emissions-related readiness monitors reset to 'Not Ready' if the battery is disconnected.

Watch out for:

• Simply clearing the code with a basic scanner will not stop the odometer from flashing. The Proxy Alignment procedure is mandatory.
• If the root cause (the faulty module) is not fixed, the code and flashing odometer return immediately after the alignment.

Will This Fail Emissions / State Inspection?

Yes — this code typically fails an OBD-II emissions inspection.

• California: A vehicle fails the OBD-II portion of the Smog Check if the Malfunction Indicator Lamp (MIL) is commanded on. The flashing odometer serves as a clear indicator of a network fault.
• New York: The NYVIP3 inspection system scans for any diagnostic trouble codes. The presence of code U1733 results in an automatic emissions inspection failure.
• Texas: In the 17 counties requiring emissions testing, the OBD-II scan detects the U1733 code and causes the vehicle to fail the inspection.

Most Commonly Affected Vehicles

• Fiat 500 / 500c / 500L (2007-2019) — Extremely common. On hardtop models, the module is typically behind the glovebox. On convertible (500c) models, it is often located in the rear quarter panel.
• Fiat Punto (Grande, Evo) (2005-2018) — Shares the same failure-prone Blue&Me system as the Fiat 500.
• Fiat Panda (2011-2020) — The Blue&Me system in the Panda is known to fail, presenting with the identical U1733 code, battery drain, and flashing odometer.
• Fiat Ducato / Doblo (2006-2022) — Used in commercial vehicles, the Blue&Me system is a known weak point, causing significant downtime due to battery drain.
• Alfa Romeo Giulietta / MiTo (2008-2020) — As part of the FCA group, these models use the same Blue&Me technology and suffer from the same module failures.
• Abarth 500 / 595 / 695 (2008-2019) — The high-performance version of the Fiat 500 uses the identical Blue&Me system and is equally susceptible to this code.
• Ford Ka (Gen 2) (2008-2016) — Built on the Fiat 500 platform, it uses the problematic Blue&Me module and exhibits the same faults, including the flashing odometer.
• Chrysler / Dodge 200, Dart, Ram ProMaster (2012-2017) — The code refers to a loss of communication with the Telematics Gateway Module (TGW). The Ram ProMaster shares electronics with the Fiat Ducato.
• Jeep Renegade (BU), Cherokee (KL) (2014-2018) — U1733 points to a communication loss with the Telematics Gateway Module (TGW), part of the Uconnect system.
• Citroën / Peugeot Nemo, Bipper, Boxer (2008-2017) — Co-developed with Fiat, these vans use the same Blue&Me system and exhibit identical failures.

Manufacturer-Specific Notes

• Fiat / Alfa Romeo / Abarth: The flashing odometer is an intentional indicator used by the FCA group to signal a 'proxy alignment' error, designed to force a visit to a dealer or specialist.
• Ford: On the second-generation Ford Ka, which shares its platform with the Fiat 500, the exact same Blue&Me failure occurs, including the Fiat-style flashing odometer symptom.
• FCA (Fiat Chrysler Automobiles): No public recalls exist for this hardware failure. However, Technical Service Bulletins (TSBs) guide dealer technicians on diagnosing U1733, confirming it is a well-documented internal problem.
• FCA & Aftermarket Stereos: When replacing the factory radio, the CAN bus network fails to recognize aftermarket adapters. This causes a persistent U1733 code requiring specific adapter settings to resolve.

Real Owner Stories

2013 Fiat 500 Pop - The Classic Failure and Fix

Owner noticed the Bluetooth stopped working and the odometer began flashing. A few days later, the car wouldn't start after being parked for the weekend.

What they tried:

1. Charged the battery at home, but it went flat again within 2-3 days.
2. A parasitic draw test showed a 0.4A (400mA) draw.
3. Located the Blue&Me module in the rear quarter panel and disconnected its wiring harness.

Outcome: After disconnecting the module, the car started instantly after sitting for 6 days. The parasitic drain vanished. The odometer continued to flash, but the primary problem of the dead battery was solved for $0.

Lesson: If you have a flashing odometer and a battery that dies after a few days, disconnecting the Blue&Me module is a free and effective way to confirm the diagnosis and stop the drain.

2012 Alfa Romeo Giulietta - Misdiagnosis and DIY Solution

Car presented with a flashing odometer and a battery that would die overnight. Bluetooth and USB were non-functional.

What they tried:

1. Initially suspected a bad battery or alternator, but both tested as good.
2. A mechanic quoted a high price for diagnostics and potential module replacement.
3. Owner decided to simply disconnect the Blue&Me module located behind the glovebox.

Outcome: Unplugging the module immediately stopped the battery drain. The owner opted to live with the flashing odometer rather than pay for a repair or proxy alignment, permanently solving the no-start issue.

Lesson: You don't always need to replace the module to solve the most critical symptom. Unplugging the faulty unit is a valid option if you can live without the features and the flashing display.

2014 Fiat 500 - Aftermarket Stereo Installation Problem

Immediately after installing a new Xtrons Android head unit, the odometer started flashing, even though the old Blue&Me system was removed.

What they tried:

1. A proxy alignment was attempted by an auto electrician but failed because the new stereo's CAN bus adapter caused a conflict.
2. The owner contacted Xtrons support, who provided a software-based solution.
3. Navigated into a hidden 'Car Info' app on the head unit and changed a CAN bus setting.

Outcome: Changing the CAN bus setting within the aftermarket stereo's software immediately stopped the odometer from flashing. The system now correctly emulates the original module.

Lesson: If U1733 appears after an aftermarket stereo install, the problem is the CAN bus adapter's configuration. Explore the head unit's settings menu before attempting a proxy alignment.

Fiat 500 with Water Damage

Owner of a Fiat 500 experienced the typical flashing odometer and battery drain. During diagnosis, they noticed the passenger footwell carpet was damp.

What they tried:

1. Removed the glovebox to access the Blue&Me module and found visible signs of corrosion on the unit and its electrical connector.
2. Traced the source of the water to clogged scuttle drains below the windshield.

Outcome: The module was internally shorted by water damage and beyond repair. The owner replaced the module and cleared the blocked drains to prevent the new part from being destroyed.

Lesson: Before replacing a faulty module, always check for signs of water ingress. Failure to fix the underlying leak will result in a repeat failure of the new part.

How to Prevent This Code From Triggering

• Clean scuttle and plenum drains regularly. (Every 6 months, or after parking under trees.) — On Fiat 500s, drains under the windshield wipers clog with debris. Rainwater overflows and drips directly onto the Blue&Me module, causing fatal water damage.
• Inspect for cabin water leaks. (Quarterly and after heavy rain.) — Catching a leak from a bad window seal or door gasket early prevents expensive damage to the Blue&Me module and other electronics located in the cabin.
• Use a quality battery tender/maintainer. (If the vehicle is parked for more than 1-2 weeks.) — A maintainer keeps the battery at a full charge, preventing it from being permanently damaged by the parasitic drain if the module fails.
• Apply dielectric grease to the module connector. (If accessing the module for any reason.) — Applying a small amount of dielectric grease to the connector pins seals them from ambient moisture and prevents future corrosion.
• Potentially add a protective shield. (Once, during a repair.) — Fabricating a simple plastic shield above the Blue&Me module deflects potential water drips, providing an extra layer of defense against leaks.

Frequently Asked Questions

Why is my odometer flashing?

The odometer flashes because the body computer detects a missing module on the network. It is a specific alert for a network configuration (Proxy) problem unique to FCA vehicles. You must fix the missing module or perform a proxy alignment to stop it.

My battery keeps dying. Could it be the alternator?

While possible, it is a common misdiagnosis for this code. If you have a flashing odometer and a battery drain, the faulty Blue&Me module is drawing power. Replacing the alternator will not fix the drain.

Will replacing my car battery fix the U1733 code?

No. A new battery will be drained by the faulty module within a few days. The root cause is the module failing to sleep, not the battery's capacity.

Can I just unplug the Blue&Me module to fix the battery drain?

Yes, unplugging the module immediately stops the battery drain. However, your odometer will continue to flash. To stop the flashing, you must perform a 'Proxy Alignment' to electronically remove it from the vehicle's configuration.

What is a 'Proxy Alignment'?

A proxy alignment is a diagnostic procedure that scans the vehicle's network and updates the body computer's list of installed modules. It is required whenever a module is added, removed, or replaced. You need an advanced scan tool like MultiECUScan to perform it.

Will a dealer software update fix U1733?

Almost never. This code indicates a physical hardware failure where the module cannot communicate. A software update cannot fix a broken processor or a short circuit.

I installed an aftermarket radio and now my odometer is flashing. What happened?

Your new radio's CAN bus adapter is not communicating correctly with the car's body computer. The car thinks the original Blue&Me module is missing. Check the adapter's settings and select the correct vehicle profile to resolve the conflict.

Is it better to repair my module or buy a new one?

Repairing your original module is highly recommended and significantly cheaper. A repair costs $150-$250, while a new dealer part exceeds $600. Repaired modules retain your vehicle's programming, making them plug-and-play without needing a dealer proxy alignment.

Key Takeaways

• U1733 almost always indicates a fatal internal hardware failure of the Blue&Me module, requiring physical repair rather than a software update.
• A continuously flashing odometer is FCA's intentional visual warning that a module has dropped off the CAN bus network.
• A failed Blue&Me module creates a severe 150mA to 1A parasitic draw, capable of permanently destroying a healthy car battery in under 48 hours.
• Mailing your original module to a specialist for a $150-$250 internal repair is the smartest fix, as it bypasses the need for a $150+ dealer proxy alignment.
• Unplugging the module instantly stops the battery drain for $0, but you must pay a shop for a 1-hour proxy alignment to stop the odometer from flashing.