Hi,

So I posted a few months ago with my 95' volvo 850. Since than, I installed a new timing belt, two new CV joints, and a slew of other things. But recently, I replaced the rear trunk support struts and one of which burst, leaking oil all over the rear brake light assembly. I smelled something electrical a few days ago and figured it was a relay. Since than the idiot light on the dash comes on when ever I use the brakes. I replaced all the bulbs, the brake lights seem to function properly, but the idiot light still comes on.

I'm wondering if I need to replace the bulb sensor relay?

Kind Regards,
Jon

Volvo 850 Manual transmission naturally aspirated 95' Wagon GLT

 

Could be I would open the sensor up and inspect it.
I believe it is in the rear drivers side like under the side floor panel. It should be Blue.

 

I looked over by the top of the trunk but couldnt find anything. Is it bellow under the trunk carpet?

 

Yes it can be like almost down by the bottom mounting for the tail light.

 

Hrm... I tore up the trunk this eve, but didn't find it... I'll snap some pix tomorrow. This is driving me crazy. It's a wagon, not the sedan... I found a black device, when I disconnected it, the car locked it's self, so I'm thinking that is NOT it :-)

 

Yes that is not it.

 

Ok... So I found the lil blue box... its under the right side trunk lining, sorta hidden under a support beam for the car its self. But that was not the issue, it was functioning properly. The issue was the center brake light bulb was out. I'm a retard :-p