centre high level brake light on

jerry blue v70 · Post by **jerry blue v70** » 01 Mar 2010, 14:48

i have a 2001 v70 t5 on which the centre brake light has come on and will not go out even when you take the car keys out
at present i have unpluged the rear wiring loom which is next to the side brake lights to stop it draining the battery
any suggestions on what may be causing this fault ? jerry

Georgeandkira · Post by **Georgeandkira** » 02 Mar 2010, 06:17

Hello, Nobody has posted an answer yet so I'll try guessing. Since you'd think ALL the brake lights would light up if a brake light switch were bad or out of adjustment you'd be reasonable to think toward something else which controls lighting in these new-fangled horror machines we drive. What powers these lights? I've read that weak batteries in alarm units can create all sorts of problems. Are the center brake lights part of the alarm's light show? Did you install a trailer hitch wiring black box in the left rear of the car? Is there a seperate powered relay which lights the CHMSL? Anybody else? Kira

Post by **jblackburn** » 02 Mar 2010, 10:10

It might be 2 wires shorting (or a broken one) in the tailgate harness. The wires inside get worn out after the hatch is open & shut many times.

Someone has pictures here of what to check out:
https://www.matthewsvolvosite.com/forums ... 3&p=116394

jerry blue v70 · Post by **jerry blue v70** » 02 Mar 2010, 15:44

Thanks for the reply i will have to get a meter on it does any body know a site to get wiring diagrams for v70 2001 volvos?