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Home >> Land Rover >> 2012 >> LR4 HSE Lux >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Exterior Lights >> Exterior Lighting >> Exterior Lighting >> Diagnosis And Testing >> Front Fog Lamps >> Symptom Chart

Symptom Chart

Symptom Possible Causes Action
Fog lamp inoperative
  • Bulb failure
  • Fuse(s) blown
  • Front fog lamp circuit short circuit to ground, open circuit, high resistance
  • Front fog lamp switch fault
  • Check the bulb condition
  • Check the fuse(s)
  • Refer to the electrical circuit diagrams and test the front fog lamp circuit for short circuit to ground, short circuit to power, open circuit, high resistance
  • Test the operation of the front fog lamp switch
Fog lamp dim
  • Incorrect bulb rating
  • Front fog lamp circuit short circuit to power
  • Front fog lamp switch fault
  • Check the bulb condition and rating
  • Refer to the electrical circuit diagrams and test the front fog lamp circuits for short circuit to power
  • Test the operation of the front fog lamp switch
Fog lamp lighting coverage poor
  • Fog lamp alignment incorrect
  • Refer to the relevant section of the workshop manual and adjust the front fog lamps alignment
Warning lamp inoperative
  • Fuse(s) blown
  • Front fog lamp switch fault
  • Instrument cluster fault
  • Check the fuse(s)
  • Test the operation of the front fog lamp switch
  • Using the manufacturer approved diagnostic system, check the Instrument Cluster (IC) for related DTCs and refer to the relevant DTC index