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Technical extrnal light failure

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Technical extrnal light failure

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Neela Bruwer

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Nov 12, 2015
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When my headlights are on and I step on the break my external light failure light comes on and if I take my foot of the break the light goes off. This only happens if the headlights are on. If the headlights are off and I step on the break the light does not come on. I have checked all the bulbs and they seem fine. What could be the cause of this.
 
Neela Bruwer said:
When my headlights are on and I step on the break my external light failure light comes on and if I take my foot of the break the light goes off. This only happens if the headlights are on. If the headlights are off and I step on the break the light does not come on. I have checked all the bulbs and they seem fine. What could be the cause of this.
Click to expand...

Hi,:)
have you changed any bulbs..?,
it is often found where a non-standard bulb is used - different wattage;)

Charlie
 
varesecrazy said:
Hi,:)
have you changed any bulbs..?,
it is often found where a non-standard bulb is used - different wattage;)

Charlie
Click to expand...

Nope i haven't changed any of my break lights they are all the once that came with the car. In from I have changed my park lights but that was almost a year ago and both still work fine.
 
Neela Bruwer said:
When my headlights are on and I step on the break my external light failure light comes on and if I take my foot of the break the light goes off. This only happens if the headlights are on. If the headlights are off and I step on the break the light does not come on. I have checked all the bulbs and they seem fine. What could be the cause of this.
Click to expand...

Hi,
You have a bad earth on one of your rear light clusters. The extra current of the brake light causes the voltage across the earth to rise and the light fialure detector thinks the side light has failed. Probably a corroded push on connector at the light cluster.

Robert G8RPI.
 
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