B2101
Daytime Running Light Module Circuit
2006-2011 BMW 325i 3.0L I6 N52 🇷🇺
Low SeverityBody
Description
Malfunction in the daytime running light (DRL) module or circuit.
Symptoms
- DRLs not illuminating
- DRLs always on even with headlights on
- DRL brightness incorrect
- DRL warning message on display
Common Causes
- Faulty DRL module
- Burnt out DRL bulb/LED
- Wiring issue
- BCM DRL output fault
- Light sensor input error
Diagnostic Steps
- Check DRL bulbs/LEDs
- Test DRL module power and ground
- Inspect wiring
- Scan BCM for DRL codes
- Test light sensor input
Repair Notes
Replace DRL bulbs/LEDs or DRL control module.
Related Codes
Other Body Codes
- B0001Driver Frontal Stage 1 Deployment Control
- B0002Driver Frontal Stage 2 Deployment Control
- B0003Passenger Frontal Stage 1 Deployment Control
- B0004Passenger Frontal Stage 2 Deployment Control
- B0005Driver Knee Airbag Deployment Circuit
- B0006Passenger Knee Airbag Deployment Circuit
- B0007Rear Left Side Airbag Deployment Circuit
- B0008Rear Right Side Airbag Deployment Circuit
- B0010Driver Side Airbag Deployment
- B0011Driver Side Airbag Deployment Circuit Open
B2101 on Other Vehicles
Common Questions
What does code B2101 mean on a 2006-2011 BMW 325i?
B2101 stands for "Daytime Running Light Module Circuit". Malfunction in the daytime running light (DRL) module or circuit.
What are the symptoms of B2101 on a BMW 325i?
Common symptoms of B2101 include: DRLs not illuminating, DRLs always on even with headlights on, DRL brightness incorrect, DRL warning message on display.
What causes B2101 on a 2006-2011 BMW 325i?
Common causes of B2101 include: Faulty DRL module, Burnt out DRL bulb/LED, Wiring issue, BCM DRL output fault, Light sensor input error.