OBD-II code · Network
U0182 Lost Communication with Headlamp Leveling Control Module
The vehicle network has lost the headlamp leveling controller. Automatic leveling is disabled and the lamps stay in a default position; on many vehicles the headlight warning comes on.
Is it safe to drive with U0182?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyLeveling module unpowered
- Less likelyGateway module routing CAN messages incorrectly
- Less likelyCAN terminating resistor (120 Ω) drifted out of spec
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–2 h
- Emissions test
- Usually unaffected
- Parts involved
- Headlamp Leveling Module, Can Bus Wiring
Related codes
- U017FLost Communication With Seat Belt Pretensioner Module B
- U0180Lost Communication with Automatic Lighting Control Module
- U0181Lost Communication with Auto Park Brake Module
- U0183Lost Communication with Sunroof Control Module
- U0184Lost Communication with Radio
- U0185Lost Communication with Antenna Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.