Centre brake light (third brake light) not working

Fault diagnosisCentre brake light (third brake light) not working

CENTRE BRAKE LIGHT (THIRD BRAKE LIGHT) NOT WORKING

Only the third brake lights do not work when the brake pedal is pressed with the key ON.

The third brake lights are connected to the right rear brake light branch

STEP	OPERATIONS TO BE CARRIED OUT	TEST RESULTS
0	PRELIMINARY CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the third brake light does not come on whilst the other side lights do by pressing/releasing the brake pedal	Move on to Step	Left and/or right bulb holder assembly faulty.	See table I15 (SIDE) BRAKE LIGHTS NOT WORKING
1	CENTRE BRAKE LIGHT ELECTRICAL CIRCUIT CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the condition of the five individual bulbs and the bulb holder assembly.	Move on to Step	1. Bulbs damaged	1. Replace the individual bulbs
		Move on to Step	2. Bulb holder assembly faulty	2. Repair and/or replace the third brake light
2	CENTRE LIGHT ELECTRICAL CIRCUIT CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the continuity of the wiring between the junction unit and the bulb holder See E2021 BRAKE LIGHTS	Move on to Step	Wiring damaged	Renew the electrical connections
3	CENTRE LIGHT ELECTRICAL CIRCUIT CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the earth connection for the bulb holder is correct. See E2021 BRAKE LIGHTS	Move on to Step	Earth connection damaged	Renew and/or replace the connection involved
4	CHECK ON CORRECT OPERATION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the fault is no longer present

Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.