DRL Dimming Function Fault
The B0096 code means the vehicle's onboard diagnostic system has detected: DRL Dimming Function Fault. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- moderate
- Estimated cost
- $30 - $250 (parts and labor)
Basic scanners skip body codes entirely. BlueDriver reads airbag, HVAC, lighting, and BCM codes through your phone.
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Common Symptoms
- DRLs not dimming when headlights on
- DRLs at full brightness constantly
- DRL intensity unchanged
- Excessive DRL glare with headlights
Probable Causes (Ranked by Likelihood)
- BCM DRL dimming output failure Very High
- Failed dimming resistor or driver High
- Software configuration error Moderate
- Wiring fault in dimming circuit Low
Step-by-Step Diagnostic Procedure
-
Scan BCM for dimming DTCs
-
Test dimming with scan tool
-
Check dimming resistor or driver
-
Verify BCM dimming config
Frequently Asked Questions
Why do DRLs need to dim?
To prevent excessive glare and differentiate between DRL and headlight mode.
Can I adjust DRL brightness?
Not typically; controlled by the BCM.
Will this blind other drivers?
May be slightly brighter but not as blinding as misaimed headlights.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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