2582412 - I15 (SIDE) BRAKE LIGHTS NOT WORKING

When the brake pedal is pressed with the ignition ON, the brake lights do not work and this fault is signalled by the 'lights failure' warning light If the brake lights are not working and the check panel does not signal it See table I30  LIGHTS CHECK NOT WORKING
Results of the tests
1CHECK WITH EXAMINER DIAGNOSTIC INSTRUMENTAll OKProblems metOperation
Connect the EXAMINER diagnostic equipment to the diagnostic socket.Check that there are no faults in the Body Computer.Continue to Step 2Brake lights error. Check the condition of the bulbsContinue to Step 2
Incorrect bulbRestore the correct connectionsContinue to Step 3
2CHECK INDIVIDUAL LIGHTSAll OKProblems metOperation
Check the condition of the individual bulbs and bulb holder assemblyContinue to Step 3Bulbs damagedReplace bulbs Op.   5540A50 
Bulb holder assembly faultyRepair or replace the rear lights cluster Op.   5540A44 
3CHECK BRAKE LIGHTS ELECTRICAL CIRCUITAll OKProblems metOperation

Check, in order:

  • stop lights fuse
  • connection between dashboard control unit, Body Computer and brake pedal switch;
  • connections between Body Computer and bulbs : See   E2021  BRAKE LIGHTS
Continue to Step 4Component defectiveReplace the component involved (if a fuse is involved, search for the cause of the problem)
Connections brokenRestore the connections See   E2021  BRAKE LIGHTS
4CHECK ON BRAKE PEDAL SWITCHAll OKProblems metOperation
Check that the brake pedal switch is fitted correctly and working See   E2021  BRAKE LIGHTS Continue to Step 5Switch fastening / adjustment incorrectAdjust the switch
Brake pedal switch faultyReplace the switch Op.   5550D10 
5CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentFault persistsSearch for the fault starting from another symptom'