I have a renault Grand Scenic 2009 and have a fault with the brake lights. When I depress the foot brake the LED brake lights come on but not bright and the third brake light does not work. If I put on the side lights the brake lights work correctly. Is there any common known fault or can you point me in a direction?RegardsSteve
Country: United KingdomMake: RenaultModel: Grand ScenicYear: 2009Engine: 2000
Check wireing, earths, fuses, remove and check other bulds incase causing earth issues. disconnect third brake light.
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Hello and Welcome to justanswer..This is typical of a bad / faulty earth on one of the lamp units ( which will affect all)..or chaffed wiring causing the same...You need to check the wiring to the tail gate - in the rubber tube that links to it.. its common to have a faulty/ broken wire in there...which will cause all this... Having the tail light system on provides an alternative earth making them work.Again - wires to the tailgate being faulty are common but it can also be a fault inside the tailgate etc - So start by checking the above and go from there then if necessary...its always one or the other..
Im very pleased to have helped you -Let me know if I can help anymore...
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I have tried adding earth leads to the tail lights and to the third brake by splicing into the earth wires near to the lights but to no change, would you recommend putting a new earth to all 3 lights?
Hello again Steve , Thank you for your reply ..In that case , this is looking like a control unit malfunction which is up under the passenger side.. I wouldn't advise splicing into wires etc no.. your next move on this one has to be to have a plug in diagnostic test at a Renault garage - or any garage that has the correct test equipment for this system... When these units go faulty, you can't do anything on a diy basis Im sorry to say - so thats the next move on this one now to get this sorted out for you.Kind Rgds - MIKE.
>> Please click the "Accept button" for me Now - Thank You ... Please note , you need to press the Accept button even if you are a subscriber to justanswer - thank you again. Rgds - MIKE
34 years of vehicle repair / diagnostics