2016-2017 Acura RLX Ignition Switch: FWD vs. Hybrid and Replacement Guide
This guide clarifies the critical compatibility differences and programming requirements for the 2016-2017 Acura RLX push-button start switch.
- The ignition switch for Front-Wheel Drive (FWD) models is NOT interchangeable with the one for AWD Sport Hybrid models. You must match the part number.
- This ignition switch is a plug-and-play part and does NOT require any programming or a dealer visit for installation.
- Before blaming the switch for a no-start issue, always check the key fob battery and the main car battery first, as they are more common failure points.
- Buying a used OEM switch is a cost-effective and reliable repair option, saving significant money over a new dealer part.
Critical Fitment & Part Number Information
When replacing the ignition switch on a 2016-2017 Acura RLX, you must pay close attention to which version of the car you have. The part is NOT interchangeable between the standard Front-Wheel Drive (FWD) models and the AWD Sport Hybrid models.
Warning: The ignition switch for standard FWD models will NOT fit or function in the AWD Sport Hybrid model, and vice-versa. Always verify your vehicle's drivetrain before ordering a replacement part.
Part Numbers by Vehicle Model:
- Front-Wheel Drive (FWD) Models: The primary part number for the FWD RLX is 35881-TY2-A11. This part has been superseded by newer numbers, including 35881-TY2-A31 and 35881-TY2-A32. If you are purchasing a replacement, any of these numbers should work for a FWD model, with the later numbers being the most recent revisions from Acura.
- AWD Sport Hybrid Models: The correct part number for the RLX Sport Hybrid is 35881-TY3-A11. This part is specifically for the hybrid model and is not interchangeable with the FWD versions.
Does the Ignition Switch Need to Be Programmed?
No, the ignition switch itself does not require programming. It is a simple electronic switch that sends a signal. The security and anti-theft logic are stored in other modules in the car, like the immobilizer unit and the Body 🎬 Watch: Diagnosing an Acura RLX start stall immobilizer fault Control Module (BCM), which are paired to your specific key fobs. This makes replacement a straightforward plug-and-play process. You will not need a trip to the dealer or a locksmith to program the switch itself. However, if you are having issues with your key fobs, they are what require professional programming.
Symptoms of a Failing Ignition Switch
Failure of the ignition switch on the RLX is not common, but it can happen. Symptoms are almost always related to starting the vehicle. Before suspecting the switch, always check the battery in your key fob and the main vehicle battery, as these 🎬 See this quick guide on replacing your key fob battery are far more common causes of starting issues.
- Engine Does Not Start or Respond: The most common symptom is a complete lack of response when the button is pushed. The dashboard lights may or may not turn on, but the engine will not crank.
- Intermittent Starting: The vehicle may start correctly sometimes but fail to respond at other times, requiring multiple button presses. This unpredictability can leave you stranded.
- Accessory Mode Works, But Engine Won't Crank: You may be able to press the button to turn on the radio and accessories, but a second press to start the engine does nothing.
- Sticking or Physically Damaged Button: The button itself may feel stuck, fail to spring back, or have visible damage that prevents it from working correctly.
Buying a Used 2016-2017 RLX Ignition Switch
Purchasing a used OEM ignition switch is a great way to save money on this repair, especially since no programming is required. Here’s what to look for:
- Match the Part Number EXACTLY: This is the most important step. Due to the FWD and AWD Sport Hybrid split, you must buy a switch with the correct part number for your specific vehicle. A switch from a FWD model will not work in a hybrid.
- Inspect the Connector: Ensure the electrical connector and its pins are clean, straight, and free of any corrosion or damage.
- Check the Button Action: The button should press in smoothly and return to its original position without sticking.
- Why Used OEM is a Smart Choice: For a component like this, a used original Acura part is often more reliable than a new, cheap aftermarket alternative. The quality of the plastics and internal contacts meets factory standards, ensuring a proper fit and long service life.
Replacement Cost Comparison
Prices can vary based on supplier and location. The following is an estimate of what you can expect to pay.
| Part Type | Estimated Cost |
|---|---|
| New OEM | $250 - $370 |
| New Aftermarket | Not widely available |
| Used OEM | $40 - $120 |
| Shop Labor | $110 - $160 |
Frequently Asked Questions (FAQ)
Will I need to get my keys reprogrammed after replacing the ignition switch?
No. The ignition switch is not part of the security programming. Your existing keys are programmed to the car's immobilizer module, not the switch, so they will work immediately after the new switch is installed.
My car won't start. Is it definitely the ignition switch?
Not necessarily. A no-start condition is more commonly caused by a dead key fob battery, a weak car battery, a faulty starter, or an alternator problem. Always diagnose these items first before replacing the ignition switch.
What is the difference between part numbers 35881-TY2-A11, 35881-TY2-A31, and 35881-TY2-A32?
These are different revisions of the same part for the FWD models. 35881-TY2-A31 replaced A11, and 35881-TY2-A32 replaced A31. They are all interchangeable for the FWD RLX.
Are there any recalls for the 2016-2017 Acura RLX ignition switch?
No, there are no specific recalls for the ignition switch on these models. While there are other recalls for the RLX, none pertain to the push-button start switch.
Helpful Videos
Technical Specifications
OEM Part Numbers: 35881-TY2-A01 35881-TY2-A11 35881-TY2-A31 35881-TY2-A32 35881-TY3-A11
Push-button start switch assembly. No programming required.
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.
- Acura RLX: