Volvo 940 Brake Lights
Volvo 940 Brake Lights
Hello. My 945 prefl brake lights stopped working. I changed baggage doors and than it just happened. It's possible because of this? New doors was been from FL, but I changed cables as well. Only difference was been that FL had one connection for number lights, but prefl two. Bulbs are fine.. Fuse is getting burned after pushing pedal. Also fuse is getting broken when take out both bulbs and pushing pedal. What can be a problem? Relay or sensor from brake pedal, or there is more week points? 
Last edited by Snosnier; Jan 30, 2021 at 07:33 AM.
Senior Member
Joined: Oct 2010
Posts: 4,540
Likes: 137
OK, we don't have "face lift" 940 in the US, here unfortunately the 940 was not imported after the 1995 model year, and the baggage door is a "tail gate".
If your lights were fine before the change, then something now is not connected correctly. The license plate lights should not be causing this. I'd look for a short somewhere in the brake light circuit, The only relay is the check lights relay (big double stack one) which might be responsible but usually it just goes out causing no brake lights at all. May be you should take that relay out and see if the fuses still burn out. You won't have brake lights without it but you'll get some ideas. The brake light switch above the pedal could be bad and causing a short too...
If your lights were fine before the change, then something now is not connected correctly. The license plate lights should not be causing this. I'd look for a short somewhere in the brake light circuit, The only relay is the check lights relay (big double stack one) which might be responsible but usually it just goes out causing no brake lights at all. May be you should take that relay out and see if the fuses still burn out. You won't have brake lights without it but you'll get some ideas. The brake light switch above the pedal could be bad and causing a short too...
OK, we don't have "face lift" 940 in the US, here unfortunately the 940 was not imported after the 1995 model year, and the baggage door is a "tail gate".
If your lights were fine before the change, then something now is not connected correctly. The license plate lights should not be causing this. I'd look for a short somewhere in the brake light circuit, The only relay is the check lights relay (big double stack one) which might be responsible but usually it just goes out causing no brake lights at all. May be you should take that relay out and see if the fuses still burn out. You won't have brake lights without it but you'll get some ideas. The brake light switch above the pedal could be bad and causing a short too...
If your lights were fine before the change, then something now is not connected correctly. The license plate lights should not be causing this. I'd look for a short somewhere in the brake light circuit, The only relay is the check lights relay (big double stack one) which might be responsible but usually it just goes out causing no brake lights at all. May be you should take that relay out and see if the fuses still burn out. You won't have brake lights without it but you'll get some ideas. The brake light switch above the pedal could be bad and causing a short too...
Senior Member
Joined: Oct 2010
Posts: 4,540
Likes: 137
Which 7 relays did you change? The Check Lights one too?The bulb you refer to is the brake/turn signal one and it usually does that when the wiring is wrong or a ground is bad. You must have a short in the brake wiring somewhere.
I think I will change all cables for tail lights from another brick and than will see
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