Honda Accord Brake Light Switch Problems & Solutions (2009-2022)
Solve no-start issues, warning lights, and dead batteries by understanding your Accord's brake light switch.
- Before buying a switch, check the brake pedal for a broken plastic stopper pad on the floor; this is a common and cheap fix.
- A bad switch can cause a no-start condition, prevent shifting from Park, and trigger VSA/ABS warning lights.
- Replacement is a simple DIY task that requires no special tools, just uncomfortable work in the footwell.
- Proper adjustment of the new switch is crucial to ensure the brake lights activate correctly and don't stay on.
Is a Bad Brake Light Switch Causing Your Accord's Problems?
A failing brake light switch in a 2009-2022 Honda Accord can cause a surprising number of issues that seem unrelated to the brakes. Because the switch is tied into so many different systems, its failure can be confusing. Before you replace the switch, it's important to recognize the specific symptoms.
🎬 Watch: Common symptoms of a failing brake light switchPro Tip: Check This Before You Buy
A very common failure on Honda Accords is not the switch itself, but a small plastic or rubber pad on the brake pedal arm called a "stopper." This pad presses against the switch's plunger. Over time, it becomes brittle and can crumble, falling to the floor mat. When this happens, the switch plunger is no longer pressed in when the pedal is released, making the car think the brakes are always on. This leads to brake lights that won't turn off and a dead battery overnight. Check the brake pedal arm for a small hole where this pad should be. Replacing this stopper is a very cheap and easy fix that often solves the problem.
🎬 Watch how to replace a broken brake pedal stopperCommon Symptoms of Failure
- Car Won't Start: For models with push-button start, the car won't recognize that the brake is pressed and will only go into accessory mode or not respond at all.
- Brake Lights Don't Work: The most obvious symptom is that your brake lights do not light up when you press the pedal, which is a serious safety hazard.
- Brake Lights Stay On: The switch can fail in the "on" position, leaving your brake lights on constantly and draining your battery. This is often caused by the failed pedal stopper mentioned above.
- Can't Shift Out of Park: The safety interlock that requires you to press the brake to shift out of Park will not disengage.
- Dashboard Warning Lights: You may see VSA, ABS, or other brake-related warning lights illuminate on your dash. This happens because the stability control system gets conflicting information from a faulty switch.
- Cruise Control Issues: The cruise control may not activate or may shut off unexpectedly.
Known Issues: 2018-2020 Accord TSB
Honda issued a Technical Service Bulletin (TSB) for some 2018-2020 Accord models. This is not for the main brake light switch but for a related issue. The TSB (NHTSA ID #10177332) addresses a problem where the red "BRAKE" warning light comes on and stores a diagnostic trouble code C1120-14, indicating an Electric Parking Brake Switch Circuit Malfunction. If you have this specific code and warning light, a dealer will need to investigate according to the TSB.
Choosing the Right Aftermarket Brake Light Switch
For a part like a brake light switch, both OEM and aftermarket options are good choices. The OEM part guarantees a perfect fit, but often at a higher cost. Aftermarket parts offer significant savings. Here's a look at the available brands:
Tier 1: Reputable Aftermarket Brands
- Standard Ignition (SMP): A widely recognized brand that manufactures a huge range of automotive electronics. They state their parts undergo 100% testing and are designed to match OE function. While generally reliable, it's always good to confirm the electrical connector matches your car's harness, as one user reported a fitment issue on a different Honda model.
- Beck Arnley: Specializes in parts for foreign nameplate vehicles and focuses on meeting OE specifications for fit and function. They are a trusted choice for many import vehicle repairs.
Tier 2: Value Options
- Facet: An Italian manufacturer known for producing OE-equivalent electronic parts. While less common in North American shops, they are a large global supplier.
- Holstein & Rostra Powertrain: These brands provide functional, budget-friendly alternatives. For a simple switch, they can be a cost-effective solution, but may not have the same long-standing reputation as the Tier 1 brands.
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket | $10.69 - $85.23 |
| New OEM | $15 - $65 |
| Shop Labor | $50 - $100 |
Frequently Asked Questions (FAQ)
Why are my VSA and ABS lights on because of a brake switch?
Your Vehicle Stability Assist (VSA) and Anti-lock Braking System (ABS) need to know when you are braking. If the brake light switch is faulty, it can send an incorrect or no signal, confusing the system. The car's computer turns the systems off as a precaution and illuminates the warning lights on the dashboard.
Is replacing the brake light switch a DIY job?
Yes, for most people this is an easy DIY repair that takes less than 30 minutes. The switch is located above the brake pedal. 🎬 See a video guide on replacing the Accord brake light switch It typically requires twisting the switch to unlock it from its bracket and disconnecting an electrical plug. The main challenge is the uncomfortable position required to work under the dashboard.
My brake lights work, but my car won't start. Could it still be the switch?
Yes. Modern brake light switches often have multiple circuits inside them. It's possible for the circuit that controls the brake lights to work fine, while the separate circuit that sends a signal to the engine start system has failed.
How do I adjust the new brake light switch?
Proper adjustment is critical. The switch is threaded and can be screwed in or out to adjust its position. The goal is for the plunger to be fully depressed when the brake pedal is not touched, and for it to release the moment you begin to press the pedal. If adjusted too far out, the brake lights may stay on. If adjusted too far in, there will be a delay before they activate.
Helpful Videos
Technical Specifications
OEM Part Numbers: 36750-SJA-013 36750-T2A-A01 36750-T2A-A02 36750-T3V-A01 36750-SDA-A01
Located above the brake pedal, this is a 4-terminal, plunger-style switch that activates upon pedal movement. It controls the brake lights, cruise control, shift interlock, and provides a signal for the push-button start system.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Honda Accord: