Lost Communication With Mirror Control Module A
What it means
U0213 sets when a module loses data-bus communication with Mirror Control Module A — the module that runs the power exterior mirrors (adjust, fold, heat, and memory). The powertrain is unaffected, so the vehicle starts and drives normally; only the powered mirror functions stop working.
Can I keep driving? Yes — the power exterior mirrors stops working, but the engine, brakes, and steering are unaffected, so you can keep driving until it's convenient to repair.
Real-world scan data
Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.
Common symptoms
What you'll notice
- Power mirror adjust, fold, or heat stops working
- Auto-dimming or mirror memory function lost
- A mirror-system warning message may appear
- Feature works intermittently
Common causes
Most likely first
- Corroded, loose, or damaged connector at the module or an inline body connectorLikely
- Chafed, broken, or shorted wiring in the communication (CAN) circuit to the moduleCommon
- Loss of switched power or ground to the affected moduleCommon
- Water intrusion into a body/door connector or the module itselfLess often
- Failed module with an internal faultLess often
- A wider data-bus problem pulling the network downLess often
How to diagnose & fix
Work through it in order
- Scan every module and note all U-codes first — several codes together point to a bus or gateway fault rather than one module.
- Inspect the connector and harness at the module for corrosion, bent pins, water, or chafing.
- Confirm the module has good switched power and a clean ground with a multimeter.
- Check communication-bus continuity and resistance from the module back to the network.
- If wiring and power are good, the module is likely faulty — replace and program/configure it as required.
- Clear the code, recheck, and confirm the affected feature works and the code stays gone.
FAQ
Quick answers
Is it safe to drive with U0213?+
Can I just clear U0213?+
Related codes
Read & clear U0213 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.