2009-2012 Acura RL Column Switch: Decoding the Wiper, Light, and Sensor Assemblies
This guide clarifies the separate lighting and wiper switch assemblies, helping you diagnose failures and purchase the correct used part for your Acura RL.
- The 'column switch' is not one part; it's an assembly of a Lighting Switch, a Wiper Switch, and a base housing. Identify which part has failed before buying.
- Failure symptoms are specific: lighting issues point to the left stalk (35255-SJA-A5x), while wiper issues point to the right stalk (35256-SJA-A5x).
- Replacement is DIY-friendly as the steering wheel does not need to be removed, but you MUST disconnect the battery and wait 15 minutes due to the airbag.
- Numerous Takata airbag recalls affect the 2009-2012 RL. Verify your VIN on the NHTSA website to ensure all safety recalls are complete before working in this area.
Understanding the 2009-2012 Acura RL Column Switch Components
Before diagnosing or buying a replacement column switch for a 2009-2012 Acura RL, it's critical to understand that it is not a single unit. The assembly is made of three main parts, and you only need to replace the specific one that has failed. Buying the wrong component is a common and costly mistake.
| Component | Common Names | Functions Controlled | Known OEM Part Numbers |
|---|---|---|---|
| Lighting Switch | Turn Signal Switch, Headlight Switch, Combination Switch | Headlights (On/Off/Auto), High Beams, Turn Signals, Fog Lights | 35255-SJA-A51, 35255-SJA-A52, 35255-SJA-A53 |
| Wiper Switch | Wiper Stalk, Wiper/Washer Switch | Wiper Speed (Intermittent, Low, High), Auto (Rain-Sensing), Windshield Washers | 35256-SJA-A51, 35256-SJA-A52 |
| Switch Housing | Steering Angle Sensor, Switch Base, Sensor Assembly | Mounting base for both switches; contains the steering angle sensor for the Vehicle Stability Assist (VSA) system. | 35251-SJA-A51, 35251-SJA-A52 |
Pro Tip: A failure of the Steering Angle Sensor (part of the Switch Housing) will typically trigger a VSA warning light on the dashboard. Failures of the lighting or wiper switches usually do not.
Safety Warning: Airbag System Recalls. The 2009-2012 Acura RL was subject to multiple, serious recalls for Takata airbag inflators. Since replacing the column switch requires working directly next to the driver's airbag module, it is imperative to ensure your vehicle has had all safety recalls performed. You can check your vehicle's VIN on the NHTSA website. Always disconnect the negative battery terminal and wait at least 10-15 minutes before beginning any work in this area to allow the airbag system's backup power to discharge.
Symptoms of a Failing Column Switch
Symptoms are almost always specific to the functions of one stalk or the other. It is rare for both to fail simultaneously.
Lighting & Turn Signal Switch Failure
- Flickering or Inoperative Headlights: Headlights may flicker or refuse to turn on, even with good bulbs and fuses. Wiggling the switch stalk may cause them to work temporarily.
- Turn Signals Don't Work or Stay On: The turn signals may not activate, or in some cases, they may stay illuminated without blinking even after the car is turned off. This can drain the battery. While this can also be caused by a bad flasher relay, the switch is a common culprit.
- High Beams or Fog Lights Malfunction: The inability to switch between high and low beams or to activate the fog lights points directly to the lighting switch.
Wiper Switch Failure
- Wipers Won't Turn On or Off: The most common symptom is a complete lack of response from the wipers, or they may not turn off once activated.
- Erratic Wiper Behavior: Wipers may operate at the wrong speed, stop mid-swipe, or fail to park in their correct, recessed position at the base of the windshield.
- Rain-Sensing 'Auto' Mode Fails: If the automatic wiper function stops working, the issue could be the switch, the rain sensor on the windshield, or its calibration. If manual wiper speeds work correctly, the problem is more likely the sensor itself, not the switch.
Buying a Used 2009-2012 RL Column Switch: What to Check
A used OEM switch is often a smart choice, offering better quality and fit than cheap aftermarket alternatives. However, careful inspection is key to getting a good part.
1. Buy Only the Part You Need
This is the most important rule. If your turn signals are failing, you need a Lighting Switch (35255-SJA-A5x). If your wipers are the problem, you need a Wiper Switch (35256-SJA-A5x). Do not buy a complete assembly unless you are certain both parts have failed. Verify the part number on the seller's listing matches the component you are replacing.
2. Physical Inspection Checklist
- Stalk Action: The stalks should move into each position with a solid, defined click. A loose, mushy, or gritty feel indicates internal wear.
- Connectors: Inspect the electrical connector pins. They should be straight, clean, and free of any green or white corrosion.
- Markings: Ensure the white markings on the stalk are clear and not worn away. This is a good indicator of how much use the part has seen.
- Cracks and Damage: Check the plastic housing for any cracks or stress marks, especially around the mounting points.
3. Compatibility Warnings
- Rain-Sensing Wipers: The initial data for this part mentions verifying if your vehicle has rain-sensing wipers. While most RLs of this generation were well-equipped, it's wise to ensure the used wiper switch you buy came from a vehicle with the same feature.
- Early vs. Late Production: The prompt mentioned a warning about early vs. late production bodies. While research did not uncover specific differences for this model year range, part number supersessions (e.g., A51 to A52) suggest minor revisions. Matching your exact part number is the safest approach.
Cost of Replacing an Acura RL Column Switch
Prices vary significantly between the different components of the column switch assembly. Labor costs are generally the same regardless of which stalk is being replaced.
| Part / Service | Estimated Cost |
|---|---|
| New OEM Lighting Switch | $205 - $250 |
| New OEM Wiper Switch | $310 - $350 |
| New Aftermarket (Lighting or Wiper) | $45 - $170 |
| Used OEM (Lighting or Wiper) | $75 - $125 |
| Shop Labor Cost | $115 - $170 |
Replacement Overview & Difficulty
- Difficulty: 3/5 (Moderate)
- Estimated Time: 1.0 - 1.5 hours
- DIY Feasible: Yes, for those comfortable with basic tools and safety procedures.
The replacement process does not require removing the steering wheel, which makes it manageable for a DIYer. The basic steps involve:
- Disconnect the negative battery terminal and wait 15 minutes. This is a mandatory safety step to disable the airbag.
- Remove the screws holding the lower steering column cover and carefully unclip the upper and lower covers.
- Unplug the electrical connector from the switch you are replacing.
- Remove the two screws holding the switch assembly to the steering column.
- The lighting switch and wiper switch are attached to each other. Carefully separate the failed component and install the replacement.
- Reassemble in reverse order, ensuring all connectors are securely clipped in before reconnecting the battery.
Frequently Asked Questions (FAQ)
Can I just replace the turn signal stalk, or do I need the whole assembly?
You can replace just the lighting/turn signal switch assembly (the left stalk). You do not need to replace the wiper switch (the right stalk) or the main housing if they are working correctly. The two stalks can be purchased and replaced independently.
Do I need to reprogram the car after installing a new column switch?
No. The lighting and wiper switches are direct plug-and-play components and do not require any special programming or calibration. However, if you replace the entire Switch Housing that contains the Steering Angle Sensor, a calibration of that sensor may be required.
My automatic wipers are acting up. Is it the switch or the rain sensor?
First, thoroughly clean the area on the outside of the windshield in front of the rearview mirror. Dirt or residue can block the sensor. Next, test the manual wiper functions (low and high speed). If they work perfectly, the problem is likely with the rain sensor itself or its connection to the windshield, not the wiper switch on the column.
My turn signal light stays on and won't blink. Is the switch bad?
This is a common symptom of a failed switch, where the internal contacts have fused. However, it can also be caused by a faulty flasher relay. As the relay is often a cheaper and easier part to replace, some mechanics suggest testing or swapping the relay first before replacing the entire column switch.
Technical Specifications
OEM Part Numbers: 35255-SJA-A51 35255-SJA-A52 35255-SJA-A53 35256-SJA-A51 35256-SJA-A52 35251-SJA-A51 35251-SJA-A52
Controls headlights, turn signals, fog lights, wipers (including rain-sensing), and washers. Comprised of multiple, independently replaceable switch assemblies.
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 RL:
- Understanding the 2009-2012 Acura RL Column Switch Components
- Symptoms of a Failing Column Switch
- Lighting & Turn Signal Switch Failure
- Wiper Switch Failure
- Buying a Used 2009-2012 RL Column Switch: What to Check
- 1. Buy Only the Part You Need
- 2. Physical Inspection Checklist
- 3. Compatibility Warnings
- Cost of Replacing an Acura RL Column Switch
- Replacement Overview & Difficulty
- Frequently Asked Questions (FAQ)
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