Twilight Sentinel Headlight Delay Malfunction
The B0087 code means the vehicle's onboard diagnostic system has detected: Twilight Sentinel Headlight Delay Malfunction. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- moderate
- Estimated cost
- $50 - $300 (parts and labor)
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Common Symptoms
- Headlights do not stay on after exit
- Delay timer not functioning
- Headlights shut off immediately at ignition off
- Inconsistent delay duration
Probable Causes (Ranked by Likelihood)
- BCM delay timer failure Very High
- Faulty delay settings High
- Headlight relay not responding to timer Moderate
- BCM software glitch Low
Step-by-Step Diagnostic Procedure
-
Check BCM delay settings
-
Verify delay timer is enabled
-
Test relay response to timer
-
Perform BCM software update
Frequently Asked Questions
What is a twilight sentinel?
Keeps headlights on after ignition off to illuminate your path.
Can I adjust the delay?
Most vehicles allow 0 to 3 minute adjustment.
Does this affect normal operation?
No, headlights function normally with the ignition on.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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