B100313 — Left turn signal fault
Quick answer
B100313 reports a fault in the left turn signal circuit. The left turn signal sits in the front lamp at the front and the rear lamp at the rear; the lamp assembly at the affected corner is the usual part.
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 B100313
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 | |
|---|---|---|
| Front headlamp assembly - left | 861961101C | View reference |
| Rear combination lamp - left | 861962111D | 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 B100313?
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 B100313 mean?
B100313 reports a fault in the left turn signal circuit. The left turn signal sits in the front lamp at the front and the rear lamp at the rear; the lamp assembly at the affected corner is the usual part.
What should be checked first for B100313?
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 B100313?
Depending on what the checks show: Front headlamp assembly - left, Rear combination lamp - left. 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
B100413Right turn signal faultB100512Luggage compartment lamp short to powerB100612Overhead lamp short to powerB100711Battery reserve circuit short to groundB100911Reverse light short to groundB100B11Brake lamp short to groundB101111Rear fog lamp short to groundB101213Rear fog lamp open circuit
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.