3022621 - I16 CENTRE BRAKE LIGHT ("THIRD BRAKE LIGHT") NOT WORKING

When the brake pedal is pressed, with the ignition on, the centre brake light ('third brake light') does not work. If the side stop lights are not working either  See table I15  (SIDE) BRAKE LIGHTS NOT WORKING
Results of the tests
1CHECK INDIVIDUAL LIGHTSAll OKProblems metOperation
Check the condition of the individual bulbs and complete bulb holder assemblyContinue to Step 2Bulbs damagedReplace bulbs Op.   5550D16 
Bulb holder assembly faultyRepair or change the third brake light Op.   5550D16 
2BRAKE LIGHTS SWITCH CHECKAll OKProblems metOperation
Check that the brake light switch is correctly fastened and working properlyContinue to Step 3Brake light switch faultyRenew or replace the brake light switch Op.   5550D10 
3CHECK BRAKE LIGHTS ELECTRICAL CIRCUITAll OKProblems metOperation

Check, in order:

  • brake lights fuse (services)
  • connections between DASHBOARD control unit and brake pedal switch;
  • connections between DASHBOARD control unit and bulb;
  • bulb earth
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
Faulty earthRestore the earth contact : See   E2021  BRAKE LIGHTS
4CORRECT OPERATION CHECKAll OKProblems metOperation
Check that the fault is no longer presentFault persistsSearch for the fault starting from another symptom'