2017-2020 Honda Ridgeline Passenger Mirror: Decoding Memory, Heat, and LaneWatch
This guide covers the common failures, recalls, and crucial compatibility differences for the 2017-2020 Honda Ridgeline passenger-side door mirror.
- The most critical factor when buying is verifying if your truck has the LaneWatch camera; mirrors with and without it are not interchangeable.
- A recall (NHTSA #23V-174) was issued for 2020-2021 models for mirror glass that can vibrate or detach; check if your vehicle is affected.
- Problems with the mirror not remembering its position are usually fixed by resetting the seat memory, not by replacing the mirror.
- The painted outer cap can typically be swapped from your old mirror to a replacement, so matching the paint color is less important than matching the features (heat, memory, LaneWatch).
Symptoms of a Failing Passenger Side Mirror
Problems with the side mirror can range from minor annoyances to significant safety issues. Here are the most common symptoms of a failure in the mirror assembly.
1. Power Adjustment Fails or is Erratic
The mirror may refuse to move in one or all directions when you use the control switch. Sometimes, it might move intermittently or in the wrong direction. This is usually caused by a failed motor inside the mirror housing or a problem with the switch or wiring. On models with memory seats, a failure to return to the preset position can also be a symptom.
2. Heated Mirror Doesn't Defrost
If you turn on your rear defroster (which also activates the heated mirrors) and the passenger mirror remains foggy or icy, the heating element has likely failed. This is a common issue where the thin electrical grid on the back of the mirror glass breaks. While you can test for power at the mirror's connector, the element itself is part of the glass and is not separately replaceable. Some owners report the heated mirrors on the Ridgeline feel weak or slow to activate even when new.
3. Mirror Glass is Loose or Vibrating Excessively
If the mirror glass shakes while driving, it can be difficult to see out of. This was the subject of a recall (NHTSA #23V-174) for 2020-2021 models, where the adhesive on the heater pad could fail, causing the mirror glass to detach. Even on non-recalled vehicles, the clips holding the glass to the motor assembly can break or wear out, causing looseness.
4. Memory Function Doesn't Work Correctly
On Ridgelines with the memory package, the mirror is supposed to adjust to your saved position when you start the car. Sometimes, the mirror will move to an incorrect, random position upon startup. This is often a software or setting issue related to the memory seat module and the key fob being used, not a fault in the mirror itself. Before replacing the mirror, try resetting and saving your seat and mirror memory positions together.
5. Physical Damage
The most obvious failure is physical damage from an impact. This can include a cracked mirror housing, broken glass, or a completely detached assembly. Even minor impacts can damage the internal motors or wiring.
Recall Alert: Honda issued a recall (NHTSA #23V-174, Honda campaign FE5) for 2020-2021 Ridgeline models because the adhesive on the heated mirror pad could fail, leading to the mirror glass vibrating or falling off completely. This poses a significant safety risk. Dealers will replace both side-view mirrors on affected vehicles free of charge.
Buying a Used 2017-2020 Ridgeline Passenger Mirror
A used OEM mirror is often a great value, but careful inspection is key. The biggest challenge is ensuring you get the correct version for your truck's trim level. Using the wrong mirror will result in features not working or a connector that won't plug in.
1. Verify Features: The LaneWatch Test
The most important compatibility check is for Honda's LaneWatch system. A mirror with LaneWatch will have a distinct camera pod on the underside of the housing. A non-LaneWatch mirror will be smooth. These parts are not interchangeable. A truck equipped with LaneWatch needs a LaneWatch mirror, and a truck without it cannot use a LaneWatch mirror. The part numbers provided in this guide (76200-T6Z-A21 series) are for mirrors WITHOUT the LaneWatch camera.
| Feature | How to Identify |
|---|---|
| Standard Mirror | Power adjustment only. Smooth bottom, no camera. |
| Heated Mirror | Has a small heating element symbol on the glass. Connector will have extra pins for the heater. |
| Memory Mirror | No visual difference from the outside. Must be on a vehicle with memory seat buttons on the driver's door. |
| LaneWatch Mirror | Obvious camera housing on the bottom of the mirror assembly. |
2. Inspect the Part
- Housing and Cap: Check for cracks, deep scuffs, or broken mounting tabs. The top part of the mirror is a painted cap that can often be swapped from your old mirror if the color doesn't match.
- Glass: Look for scratches, cracks, or discoloration. If it's a heated mirror, ensure the heating element symbol is present if your truck requires it.
- Connector: Inspect the electrical connector for any bent or corroded pins. Count the pins and compare it to your original part if possible.
- Motor: Gently try to move the mirror glass by hand within the housing. It should move smoothly against the resistance of the motor gears. Excessive looseness is a red flag.
3. Understanding Part Numbers and Color Codes
Honda part numbers for these mirrors, like 76200-T6Z-A21ZA, contain color information. The base number is 76200-T6Z-A21, and the last two letters (e.g., ZA, ZD, ZE, ZG) specify the factory paint color for the mirror cap. For example, *NH731P* is Crystal Black, and *B588P* is Obsidian Blue Pearl. Since the painted cap can usually be swapped, don't worry too much about matching this code if you're buying used; focus on matching the features (Heat, Memory, LaneWatch).
Pro Tip: When replacing the mirror, you will need to remove the interior door panel to access the mounting bolts and electrical connector. It's a straightforward job but requires care to avoid breaking the plastic panel clips. A plastic trim removal tool is highly recommended.
Cost Comparison (2017-2020 Honda Ridgeline Passenger Mirror)
Prices vary significantly based on the mirror's features (Heated, Memory, LaneWatch). A fully-featured LaneWatch mirror will be the most expensive.
| Part Type | Estimated Cost |
|---|---|
| New OEM (No LaneWatch) | $260 - $400 |
| New Aftermarket | $75 - $130 |
| Used OEM | $100 - $250 |
| Shop Labor for Installation | $100 - $175 |
Frequently Asked Questions
Can I add a LaneWatch mirror to a Ridgeline that didn't come with it?
No, this is not a practical upgrade. The vehicle lacks the necessary wiring harness, software, and connections to the main display to support the LaneWatch camera function.
My mirror moves to a weird position every time I start the truck. Is it broken?
Probably not. This is a common symptom related to the seat memory function. Try this: with the truck on, adjust your seat and mirrors to the desired position. Then, press and hold the 'SET' button on the driver's door, followed by the '1' or '2' button until it beeps. This saves the mirror position to your memory setting and should resolve the issue.
Can I just replace the broken mirror glass instead of the whole assembly?
Yes, if only the glass is broken, you can often buy just the mirror glass with its plastic backing plate. This is a much cheaper and easier repair. The glass piece typically snaps onto the motor in the center of the housing.
Why did my heated mirror stop working but the rear defroster is fine?
The heated mirrors and rear defroster are on the same circuit and activated by the same button. If the rear window defrosts but the mirror doesn't, the fuse and switch are good. The problem is almost always a failed heating element within the mirror glass itself or a broken wire leading to it.
What tools do I need to replace the mirror assembly?
You will typically need a 10mm socket or wrench for the mounting nuts, a Phillips head screwdriver, and a plastic trim removal tool set to safely pry off the interior door panel without damaging it.
Technical Specifications
OEM Part Numbers: 76200T6ZA21 76200T6ZA21ZA 76200T6ZA21ZB 76200T6ZA21ZC 76200T6ZA21ZD 76200T6ZA21ZE 76200T6ZA21ZF 76200T6ZA21ZG
Fits right (passenger) side. Part numbers listed are for models with heated mirrors and the memory package, but WITHOUT the LaneWatch camera. Suffixes like 'ZA', 'ZD', 'ZE' denote the factory paint color of the mirror cap.
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 Ridgeline:
- Symptoms of a Failing Passenger Side Mirror
- 1. Power Adjustment Fails or is Erratic
- 2. Heated Mirror Doesn't Defrost
- 3. Mirror Glass is Loose or Vibrating Excessively
- 4. Memory Function Doesn't Work Correctly
- 5. Physical Damage
- Buying a Used 2017-2020 Ridgeline Passenger Mirror
- 1. Verify Features: The LaneWatch Test
- 2. Inspect the Part
- 3. Understanding Part Numbers and Color Codes
- Cost Comparison (2017-2020 Honda Ridgeline Passenger Mirror)
- Frequently Asked Questions
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