Mirror Driver Right Circuit Failure
The right side mirror's electric motor circuit isn't responding properly, like a broken power window that won't move. The vehicle's computer detected a wiring or motor failure preventing the mirror from adjusting.
The ECU monitors voltage and current flow through the right mirror motor circuit when adjustment commands are sent. It detects open circuits, shorts to ground, or excessive resistance that prevents normal motor operation. When measured values fall outside safe operating parameters, the fault is triggered.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Circuit Voltage | 11-14V during mirror movement | <5V or >15V, or no voltage detected |
| Motor Current Draw | 0.5-2.0A during operation | >2.5A (short) or 0A (open circuit) |
Code B1635 is a low-severity fault. Your vehicle is generally safe to drive to a workshop for diagnosis. However, do not ignore it indefinitely — low-severity codes often indicate developing problems that become expensive if neglected. Book a diagnostic appointment within 2–4 weeks. If you notice any additional symptoms (rough running, power loss, unusual smells), treat it as higher priority.
Once the fault is repaired, B1635 can be cleared using any OBD-II scanner. Connect the scanner, navigate to "Clear Codes" or "Erase DTCs," and confirm. The check engine light turns off immediately.
The code will return if the root cause was not actually fixed. The ECM re-detects the fault within 1–3 drive cycles and sets the code again.