2005-2012 Acura RL Front Door Switch: Solving Window Problems & Matching Part Numbers

Symptoms of a Failing Front Door Switch

Problems with the Acura RL's master window switch can be confusing. Sometimes the switch itself is broken, but often the issue is a simple loss of synchronization that can be fixed for free. Before assuming the part is bad, it's important to identify the exact symptom.

Most Common: Other Windows Don't Work From Driver's Door

This is the most frequent complaint. You may find that the passenger or rear windows cannot be controlled from the master switch on the driver's door, but they still work perfectly using their own individual switches. This is almost always caused by the system losing its memory after a battery replacement or disconnection. It does not mean the switch is broken. See the 'Window Reset Procedure' below before buying any parts.

Intermittent or No Operation

A single window, often the driver's window, may stop working entirely or work only sometimes. You might hear a 'click' from the door when you press the button, but the window doesn't move. This can indicate an internal failure in the switch assembly, a bad connection, or a problem with the window motor itself.

All Windows Stop Working

If none of the power windows operate from any switch, the problem is likely not a single switch but a shared power source, such as a fuse or relay. While a catastrophic failure of the master switch could cause this, it is less common.

Diagnosis & Troubleshooting

Follow these steps in order to avoid unnecessary repairs.

1. Perform the Window Reset Procedure: This simple process resynchronizes the windows with the master switch. It fixes the problem more than half the time.
   • Turn the ignition to the ON (II) position, but do not start the engine.
   • Go to each of the three NON-WORKING windows (passenger front, rear left, rear right).
   • Using that door's local switch, press and hold the switch down until the window is fully open, and continue holding for 2-5 seconds.
   • Pull and hold the switch up until the window is fully closed, and continue holding for 2-5 seconds.
   • Repeat this process for the other non-working windows.
   • Return to the driver's door. The master switch should now be able to control all windows. If this works, you are done.
2. Check Fuses: If the reset doesn't work or no windows operate, check the power window fuses in the vehicle's fuse boxes. Consult your owner's manual for the exact location and fuse ratings.
3. Test Other Functions: Check if the power locks and power mirrors work from the driver's door switch. If they also fail, it points more strongly to a faulty master switch assembly or a connector issue.

Buying a Used 2005-2012 Acura RL Front Door Switch

Due to the extremely high cost of a new OEM switch, a used, recycled part is an excellent value. However, you must be careful to get the correct part for your vehicle. Here’s what to check.

1. Verify the Part Number

This is the most critical step. Acura updated this switch several times. The best way to ensure compatibility is to remove your existing switch and read the part number on the sticker. The latest known part number is 35750-SJA-A03ZA, which supersedes earlier versions like 35750-SJA-A02ZA. Using the wrong switch may result in some functions not working.

2. Match the Color and Buttons

All switches for the 2005-2012 RL should be a Dark Silver finish, corresponding to Acura's color code *NH630L*. Visually confirm that the used switch you are buying has the exact same buttons as your original, especially the 'Memory' seat buttons (1 and 2) and the mirror adjustment selector.

3. Inspect the Connector

The switch uses a large multi-pin connector. Before purchasing, inspect the pins on the used switch. They should all be straight, clean, and free of any green or white corrosion. A bad connection is a common point of failure for automotive electronics.

4. Why Used OEM is a Smart Choice

For a complex electronic module like this, a used original Acura part is often a better choice than a cheap new aftermarket part. The OEM switch was designed to integrate perfectly with the RL's other electronic systems. Aftermarket clones can have issues with button feel, backlighting, and long-term reliability. Given that a used OEM switch can be found for a fraction of the new price, it offers the best balance of quality and value.

Known Issues, Recalls, and Technical Service Bulletins (TSBs)

There are no safety recalls or TSBs from Acura for the master window switch on the 2005-2012 RL. While other Honda/Acura models have had recalls for window switches due to moisture causing a fire risk, the RL was not affected.

Replacement Guide

Replacing the master switch is a straightforward DIY job for most people.

• Difficulty: 2 out of 5
• Estimated Time: 0.5 hours
• Tools Required: Plastic trim removal tool, Phillips head screwdriver.

Step-by-Step Replacement

1. Carefully insert a plastic trim removal tool under the front edge of the switch panel assembly on the driver's door armrest.
2. Gently pry upwards to release the clips holding the panel in place. Work your way around the panel until it is loose.
3. Lift the switch panel up and disconnect the large electrical connector from the bottom of the switch. There is a small tab you must press to release the connector.
4. With the panel removed, you will see several screws holding the switch module to the trim panel. Remove these screws.
5. Install the new (or used) switch into the trim panel and secure it with the screws.
6. Reconnect the electrical harness. You should hear a click as it locks into place.
7. Press the switch panel back into the armrest until the clips snap securely.
8. CRITICAL: After installation, perform the 'Window Reset Procedure' described in the diagnosis section to ensure all windows can be controlled from the new master switch.

Cost Comparison

Frequently Asked Questions (FAQ)