2022 BMW iX Interior Mirror: Decoding Options and Replacement
This guide covers the different mirror versions for the 2022 BMW iX, common failure points, and how to replace one without breaking expensive trim.
- Compatibility is critical: The correct mirror part number depends on whether the iX has the Active Driving Assistant Pro option (SA5AU).
- Inspect used mirrors carefully for signs of auto-dimming fluid failure, which looks like a bubble or discoloration in the glass.
- Leaking mirror fluid is corrosive and can destroy interior trim; remove a leaking mirror immediately.
- Replacement is a simple DIY job involving removing plastic covers and twisting the mirror off its windshield mount, with no programming required.
Variant and Option Differences
The single most important factor when replacing the interior rear-view mirror on a 2022 BMW iX is the vehicle's option package. The correct mirror depends entirely on whether the vehicle is equipped with Active Driving Assistant Pro (option code SA5AU).
🎬 Watch a demo of BMW Active Driving Assistant Pro in action.- For vehicles WITHOUT Active Driving Assistant Pro: These models use a standard interior mirror that includes auto-dimming (EC), the alarm LED, and the universal garage door opener (GTO). Known part numbers for this version include 51-16-5-A32-377, 51165A32377, and 5A32377.
- For vehicles WITH Active Driving Assistant Pro: These models use a different, more complex mirror assembly. This is because the advanced driver-assistance features, such as lane-keeping and traffic jam assist, rely on a suite of cameras and sensors housed in the mirror mounting base. This version will have a different part number (such as 51165B53A86) and is not interchangeable with the base mirror.
Warning: You must verify which system your vehicle has before purchasing a replacement. Installing the wrong mirror will result in non-functioning features and may trigger fault codes. Check your vehicle's original build sheet or use a VIN decoder to confirm if you have option SA5AU.
Symptoms of Failure
While the 2022 iX is a relatively new vehicle, its mirror technology is shared with other BMW models, and common failure points are well-documented.
- Auto-Dimming Failure: The most common issue is a failure of the electrochromic fluid. This can manifest as a "bubble" or "lava lamp" effect inside the glass, a two-tone appearance where half the mirror dims and the other doesn't, or a complete failure to dim at night.
- Leaking Fluid: In severe cases, the seal around the glass can fail, allowing the electrochromic fluid to leak out. This fluid is highly corrosive and can permanently damage interior plastics and trim on the center console. If you see any sign of leakage, it's critical to remove the mirror immediately to prevent further damage. 🎬 See how auto-dimming mirror failure and repair looks on a BMW.
- Garage Door Opener (GTO) Malfunction: The buttons for the universal garage door opener may become unresponsive or fail to program to a new garage door motor.
- Electrical Issues: A loose internal connection or failure of the circuit board can cause flickering of the mirror display or a complete loss of all functions.
Buying a Used Int Rr View Mirror
Purchasing a used OEM mirror is a cost-effective way to restore original functionality. Since aftermarket options for a vehicle this new and complex are virtually nonexistent, a recycled original part is often the best choice. Here's what to look for:
- Verify the Part Number: This is the most critical step. Match the part number from your original mirror or confirm the correct number based on your vehicle's VIN and options. Do not buy a mirror just because it looks similar.
- Inspect the Glass: Look closely at the mirror glass for any signs of delamination, bubbling, or discoloration. Hold it at an angle to the light. The surface should be perfectly uniform. Any sign of a fluid line or bubble means the auto-dimming feature has failed.
- Check the Housing: Inspect the plastic casing for cracks, deep scuffs, or broken mounting tabs. Pay special attention to the area where the mirror twists onto the windshield mount.
- Examine the Connector: Look at the electrical connector and pins. Ensure they are clean, straight, and free of any corrosion.
Pro Tip: The term "GTO" is BMW's internal code for the universal garage door opener (HomeLink) feature. "EC" stands for Electrochromic, which is the auto-dimming function. Understanding these acronyms can help you decipher part descriptions.
🎬 Watch an overview of BMW EC, LED, and GTO mirror features.Replacement Procedure
Replacing the interior mirror is a straightforward DIY task that typically requires no special tools. However, care must be taken to avoid damaging the plastic trim covers.
- Remove the Plastic Covers: The base of the mirror where it meets the windshield is covered by two plastic pieces. These typically unclip from each other. Use a plastic trim removal tool to gently pry them apart and expose the mirror's mounting stalk.
- Disconnect the Electrical Connector: Once the covers are off, you will see a wiring harness plugged into the mirror. Depress the tab on the connector and pull it straight out.
- Twist to Remove: Firmly grip the base of the mirror stalk and twist it approximately 90 degrees (usually counter-clockwise). It will release from the metal mounting button that is glued to the windshield. Do not use excessive force or pull straight back, as this can damage the windshield.
- Install the New Mirror: Installation is the reverse of removal. Place the new mirror onto the windshield button at a 90-degree angle, then twist it back to the straight position until it clicks into place. Reconnect the electrical harness and snap the plastic covers back on.
No special programming or calibration is required for a direct, like-for-like mirror replacement.
Known Issues, TSBs, and Recalls
As of late 2026, there are no specific recalls or Technical Service Bulletins (TSBs) from the NHTSA that directly address the interior rear-view mirror of the 2022 BMW iX. However, numerous recalls have been issued for other systems on the vehicle, including the high-voltage battery, cruise control software, and driver's airbag. It is always advisable to check for open recalls on your specific vehicle by entering its VIN on the NHTSA website.
Cost Comparison
| Part Type | Estimated Cost |
|---|---|
| New OEM | $950 - $1,250 |
| New Aftermarket | Not Generally Available |
| Used OEM | $200 - $450 |
| Shop Labor | $75 - $150 |
Frequently Asked Questions (FAQ)
Do I need to reprogram the car after replacing the mirror?
No. If you are replacing the mirror with the correct, identical part number, no programming or calibration is necessary. It is a plug-and-play component.
How can I tell if my iX has Active Driving Assistant Pro?
The easiest way is to check the buttons on your steering wheel. Vehicles with this feature have additional buttons for setting following distance and activating the assisted driving modes. You can also look up your vehicle's original options list using its VIN.
Can I upgrade to the mirror for Active Driving Assistant Pro if my car doesn't have it?
No, this is not a feasible upgrade. The advanced mirror is part of a complex system that includes different wiring, control modules, and sensors throughout the vehicle. Simply swapping the mirror will not enable the features.
What causes the auto-dimming fluid to fail?
Failure is typically caused by age and heat cycles. Over time, the chemical composition of the electrochromic gel can break down, or the seal around the glass can degrade, causing it to leak internally or externally. This is a common failure mode on many vehicles with this technology, not just BMW.
Helpful Videos
Technical Specifications
OEM Part Numbers: 51-16-5-A32-377 51165A32377 51165B53A86 5A32377
Features: Electrochromic (EC) auto-dimming, Garage Door Opener (GTO), integrated alarm LED. Mounting: Twist-on base for windshield button.
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.
- BMW iX: