Network, generic

U0182 Lost Communication With Lighting Control Module Front

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

U0182 is logged when the front lighting control module stops talking on the bus. This module drives front lamp functions such as swivelling or adaptive beam patterns. GM lists it as Lost Communication With Lighting Control Module - Front in the Saab 9-5 (2010-2011) U-code list. Chrysler uses it for the adaptive front lighting module: a 2014 Jeep Grand Cherokee field report filed with NHTSA shows U0182-00 Lost Communication With Adaptive Front Lighting Control Module next to other network codes. GM's logic: the code sets when the module's supervised periodic message stops arriving at 9-16 V. U0181 is the headlamp levelling module, U0183 the rear lighting module. No MIL; cornering or adaptive light may fall back to a basic beam.

Likely causes

Front lighting module without power or ground
Corroded connector in the engine bay or headlamp area
Bus line to the module chafed or open
Front lighting module faulty

Symptoms

  • Adaptive or cornering light inoperative
  • Lighting warning lamp or message in the cluster
  • Front lamps fall back to a fixed default beam

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€60–900
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

front lighting control modulecan bus wiring

Related codes

U0180U0181U0183U0140

References: saabwisonline.com, static.nhtsa.gov, saabwisonline.com, en.wikipedia.org.