B100B11 — Brake lamp short to ground
Quick answer
B100B11 means the body controller detected a short to ground in the brake lamp circuit. On this model the brake lamp sits in the rear combination lamp, so that assembly is the usual part replaced.
What to check first
- Inspect the fuses that protect this circuit.
- Read all stored fault codes with a scan tool and deal with related codes first.
Can I still drive?
Usually drivable — have it checked soon. If in doubt, park the car and ask a technician — a fault that limits power or shuts the high-voltage system down will not clear by itself.
Parts for B100B11
A fault code points to a system, not always to one part. Work through the checks above first. If they point to a part, these are the references usually involved. The right version depends on the build, so it is confirmed against the VIN before anything is quoted.
| Part | OE reference | |
|---|---|---|
| Rear combination lamp - left | 861962111D | View reference |
| Rear combination lamp - right | 861962112D | View reference |
Need one of these parts? Send us the fault code, the VIN and a photo of the part or its label. We check the reference against the VIN, then tell you what we can supply, the price and the lead time.
Frequently asked questions
Can I drive an Aiways U5 with B100B11?
Usually drivable — have it checked soon. If in doubt, park the car and ask a technician — a fault that limits power or shuts the high-voltage system down will not clear by itself.
What does B100B11 mean?
B100B11 means the body controller detected a short to ground in the brake lamp circuit. On this model the brake lamp sits in the rear combination lamp, so that assembly is the usual part replaced.
What should be checked first for B100B11?
Inspect the fuses that protect this circuit. Read all stored fault codes with a scan tool and deal with related codes first.
Which parts can be involved in B100B11?
Depending on what the checks show: Rear combination lamp - left, Rear combination lamp - right. A fault code points to a system, not always to one part, so confirm the cause before replacing anything.
Other Body Control Module (BCM) codes for the Aiways U5
Need the part or a second opinion?
Send the fault code and your VIN. We confirm the reference against the VIN, then tell you availability, price and lead time. We ship from China to workshops and distributors across Europe.