2015-2022 Jeep Renegade Smart Key: Programming, Part Numbers, and Common Failures
This guide covers the common 'Key Not Detected' issue, mandatory programming requirements, and how to choose the right replacement key fob for your Jeep Renegade.
- Professional programming is mandatory for all replacement keys; DIY programming is not an option for this vehicle.
- Compatibility must be verified using the OEM part number (e.g., 6MP33DX9AA, 735657572), not just the FCC ID.
- An automotive locksmith can typically program a new key for less money than a dealership.
- Always replace the CR2032 battery in your existing fob as the first troubleshooting step for any key-related issue.
Symptoms of a Failing Keyless Entry Transmitter
When your Jeep Renegade's key fob starts to fail, the signs can range from minor annoyances to leaving you stranded. The first and most common cause for any of these symptoms is a weak or dead battery in the fob itself. Always replace the CR2032 battery 🎬 Watch: How to replace your key fob battery step-by-step. before assuming the entire transmitter is faulty.
- "Key Not Detected" Message: The most frequent complaint is a message on the dashboard indicating the key fob isn't detected, even when it's inside the vehicle. This can prevent the engine from starting.
- Intermittent Starting: You may need to press the push-to-start button multiple times before the engine cranks.
- Reduced Remote Range: You have to be much closer to the vehicle than usual for the lock, unlock, or panic buttons to work.
- Unresponsive Buttons: One or more buttons on the remote stop working consistently, or require multiple presses.
- Doors Won't Lock/Unlock Remotely: The remote functions fail completely, forcing you to use the physical emergency key inside the fob to enter the vehicle.
Pro Tip: If the key fob battery is dead and you need to start the car, you can often hold the nose of the key fob directly against the push-to-start button. This uses a short-range radio-frequency identification (RFID) chip inside the fob that doesn't require battery power to be read by the vehicle, allowing you to start the engine.
🎬 See how to use the push-start override with a dead fob.Known Issues, TSBs, and Recalls
While there are no direct recalls for the key fob itself, some Technical Service Bulletins (TSBs) and related issues are relevant to the keyless entry system.
- TSB S2008000113: Addresses intermittent no-start conditions where multiple push-to-start attempts are required, or an intermittent "Key Not Detected" message appears. This points to potential software issues in the vehicle's control modules that can mimic a faulty key fob.
- Radio Software Vulnerability Recall (NHTSA 15V-508): Affecting some 2015 models, this recall addressed a software vulnerability in the radio that could allow unauthorized remote access to vehicle systems. While not a direct key fob issue, it highlights the importance of ensuring all vehicle software is up to date, as various electronic systems are interconnected.
- General Electrical Issues: Owners have reported various electrical gremlins, including intermittent fob recognition that sometimes resolves temporarily after disconnecting the vehicle's main battery. This suggests that issues may sometimes lie with the vehicle's receiver (the RF Hub) rather than the transmitter itself. 🎬 Watch: Troubleshooting the RF Hub and antenna for detection issues.
Programming and Installation Requirements
Warning: This keyless entry transmitter MUST be professionally programmed to your vehicle. Do-it-yourself programming is not possible for the 2015-2022 Jeep Renegade.
The smart key contains a transponder chip that is part of the vehicle's anti-theft immobilizer system. To function, a new or used replacement key must be electronically paired to your specific Renegade using specialized diagnostic equipment connected to the vehicle's OBD-II port.
- Who can program it? A Jeep dealership or a qualified automotive locksmith with the proper tools and software can program this key.
- Is a dealer visit required? No, a well-equipped independent locksmith can perform the programming, often at a lower cost and with more convenience than a dealership.
- What is required for programming? The programmer will need access to the vehicle and all keys you wish to have programmed (including any existing working keys). They will connect a diagnostic tool to the car to read the vehicle's PIN code and pair the new key(s) to the immobilizer module.
Buying a Used Keyless Entry Transmitter
Purchasing a used OEM key fob can be a smart way to save money, but careful verification is essential to avoid buying an incompatible or unusable part.
1. Verify the Part Number
The single most important step is to match the OEM part number. Do not rely on the FCC ID alone, as many different, incompatible keys use the same FCC ID (M3N-40821302).
- Known OEM Part Numbers: 6MP33DX9AA, 735657526, 735657572
2. Check the Button Configuration
Ensure the used remote has the same 3-button layout (Lock, Unlock, Panic) as your original key. Different button configurations exist for other vehicles and will not work correctly.
3. Physical Inspection
When you receive the part, inspect it carefully:
- Case Condition: Look for cracks, deep scratches, or signs that the case has been pried open improperly.
- Button Wear: Check for worn-off symbols or buttons that feel mushy or stuck.
- Battery Terminals: Open the case and check the battery contacts for any green or white corrosion, which indicates moisture damage.
4. Source and Guarantee
Buy from a reputable seller who guarantees the key is "unlocked" and can be reprogrammed. Some keys can become permanently locked to their original vehicle's VIN. A trustworthy auto recycler will have tested the key and will stand behind its programmability.
Cost Comparison
The cost of replacing a key fob involves both the part itself and the labor for programming. Prices can vary significantly based on the source.
| Item | Estimated Cost | Notes |
|---|---|---|
| New OEM Key Fob (Dealer) | $150 - $250+ | Part only. Does not include programming or cutting the emergency key. |
| New Aftermarket Key Fob | $60 - $120 | Quality can vary. Ensure it is from a reputable brand. |
| Used OEM Key Fob | $30 - $75 | A cost-effective option, but requires professional programming. |
| Programming Labor (Dealer) | $140 - $200 | Often a fixed 1-hour labor charge. |
| Programming Labor (Locksmith) | $75 - $150 | Typically more affordable and they often offer mobile service. |
Frequently Asked Questions (FAQ)
Why did my key fob stop working after I changed the battery?
There are a few possibilities. First, ensure you used the correct CR2032 battery and that it was installed with the positive side facing down. Second, the battery contacts inside the fob may be loose or corroded. Finally, in some rare cases, the fob may lose its programming and need to be re-paired with the vehicle by a professional.
Can I program a new Jeep Renegade key myself?
No. Unlike some older vehicles, the 2015-2022 Jeep Renegade requires specialized diagnostic equipment to program new keys to the vehicle's immobilizer system. This must be done by a dealership or an automotive locksmith.
Is it cheaper to use a locksmith or the dealership?
Generally, an automotive locksmith is a more affordable and convenient option for key fob programming. They often have lower labor rates and can provide mobile service, saving you a trip to the dealer. However, always confirm they have the equipment to program keys for your specific year of Jeep Renegade.
What is the OBD-II code B1A25?
The Diagnostic Trouble Code (DTC) B1A25 means "Invalid Key". This code is set by the Wireless Control Module (WCM) when it receives a signal from a key that is not programmed to the vehicle, or when it fails to read a valid transponder signal. This can be caused by trying to use the wrong key, a failed transponder in the key fob, or sometimes interference from other RFID devices on your keychain.
Helpful Videos
Technical Specifications
OEM Part Numbers: 6MP33DX9AA 735657526 735657572 M3N40821302
3-Button (Lock, Unlock, Panic) Smart Key for Push-to-Start Ignition. Uses one CR2032 3V battery.
We Have This Part in Stock
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.
- Jeep Renegade:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Symptoms of a Failing Keyless Entry Transmitter
- Known Issues, TSBs, and Recalls
- Programming and Installation Requirements
- Buying a Used Keyless Entry Transmitter
- 1. Verify the Part Number
- 2. Check the Button Configuration
- 3. Physical Inspection
- 4. Source and Guarantee
- Cost Comparison
- Frequently Asked Questions (FAQ)
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