[HELP] Brake Light issue

[Rversteeg]

Don't bother about the loose connectors you have found, they are for the cruise control option.
Did you check fuse no. 4?
Rob

[PurpleTurbo]

Originally Posted by Rversteeg

Don't bother about the loose connectors you have found, they are for the cruise control option.
Did you check fuse no. 4?
Rob

Yes fuse 4 is fine, checked it with the multimeter.

[bob12]

Originally Posted by griston64

Attachment 132558

The switch shown will be above the brake pedal. If I remember rightly when you push down on the pedal it releases and your brake lights come on. If it's too close they won't come on. That was my issue but the switch could also have failed.

I have just had to deal with that switch on my V70 auto on the brake pedal as the stop lights were on all the time and I had to remove the fuse to turn them off!! To make it more awkward on an auto the cruise control switch is is mounted directly above it.

The button of the switch remains in contact with the brake pedal all the time (i.e. the switch is off) until the pedal is applied when the button of the switch is not held in and and current flows to the stop lights as the pedal moves downward.

To adjust the switch without disconnecting it wedge the brake pedal in the depressed position. Hold the switch in position in the bracket and push the the wire plug in. The white section is the auto adjustment and will be pushed outwards. Make sure it is fully out (in this position it also releases the plastic tabs that hold the switch in position should you need to remove the switch).

Now, still holding the switch gently release the brake pedal. You will hear a clicking sound as the auto adjust both fix the switch in position and sets the switch button against the brake pedal. The wire plug end of the switch moves backwards towards you during this process.

If the switch is not faulty ... job done.
Bob

[taiwan740]

I'm convinced replacing the brake bulbs on a 940 is the most difficult mechanical job on these cars. I can replace front brake discs and pads faster than it takes me to replace a bulb. Having to sneak my claw through the frame to get at that holder, and then trying to align the keys with the hole, and then inevitably the metal tabs will be corroded or bent too far back so it has to come out again, back round to the car, fire up the engine to start cos the relay/light is always on at ignition.

If it goes again i'm getting the garage to do it lol

[Laird Scooby]

Originally Posted by taiwan740

I'm convinced replacing the brake bulbs on a 940 is the most difficult mechanical job on these cars. I can replace front brake discs and pads faster than it takes me to replace a bulb. Having to sneak my claw through the frame to get at that holder, and then trying to align the keys with the hole, and then inevitably the metal tabs will be corroded or bent too far back so it has to come out again, back round to the car, fire up the engine to start cos the relay/light is always on at ignition.

If it goes again i'm getting the garage to do it lol

I take it from your statement you've never changed an in-tank fuel pump yet?

Why do you need to fire up the engine to make the brake lights work? They're wired to work without the ignition.

[griston64]

Originally Posted by taiwan740

I'm convinced replacing the brake bulbs on a 940 is the most difficult mechanical job on these cars. I can replace front brake discs and pads faster than it takes me to replace a bulb. Having to sneak my claw through the frame to get at that holder, and then trying to align the keys with the hole, and then inevitably the metal tabs will be corroded or bent too far back so it has to come out again, back round to the car, fire up the engine to start cos the relay/light is always on at ignition.

If it goes again i'm getting the garage to do it lol

You must've jinxed mine as after reading this by rear passenger side bulb was out.

So just to see the timing I set the stopwatch on my phone and from start to finish to change the bulb was 2mins and 2 sec I also tested that it was working within that time limit.

Let me know when you are free to change my discs and pads as getting them done under 2 minutes is bloody impressive :teeth_smil e:

[griston64]

And before you ask I'm 6'2" and take XXL size in gloves

[PurpleTurbo]

Originally Posted by griston64

Attachment 132558

The switch shown will be above the brake pedal. If I remember rightly when you push down on the pedal it releases and your brake lights come on. If it's too close they won't come on. That was my issue but the switch could also have failed.

Hey, ive had a look today and for the life of me I cannot find anything that even resembles that switch, there is this little notch where i guess it should be? I could be wrong though
137345417_1339386649729332_434580443728909963_n.jpg

[Laird Scooby]

Originally Posted by PurpleTurbo

Hey, ive had a look today and for the life of me I cannot find anything that even resembles that switch, there is this little notch where i guess it should be? I could be wrong though
Attachment 132575

Have a proper look at your photo :



Look through that little square "window" in the bracket and not the witness mark on the brake pedal arm. That's where the switch lives, the pedal operates it at the top of the stroke to open the brake light contacts - as the pedal is pushed down away from that window, the brake light switch plunger is allowed to move out of the switch under spring pressure closing the brake light switch contacts.

[PurpleTurbo]

Originally Posted by Laird Scooby

Have a proper look at your photo :



Look through that little square "window" in the bracket and not the witness mark on the brake pedal arm. That's where the switch lives, the pedal operates it at the top of the stroke to open the brake light contacts - as the pedal is pushed down away from that window, the brake light switch plunger is allowed to move out of the switch under spring pressure closing the brake light switch contacts.

okay, this means im missing the switch altogether right?