Mazurfer

Wow....................what did you get?

Nubo

Why didn't I think of that?

Insignia

Picked up a 335i

jdzoom8

I have run into the same problem with my STOP fuse. Keeps blowing only when I tap the breaks. I see that the last guy gave up on the problem. Has anyone else seen a solution to this problem?

I have had a history of moisture in my taillights, but nothing recently. I will try disconnecting the bulbs and going from there, Car off and car on.

What all does the STOP fuse feed? Thanks for the help.

rx8cited

Brake lights only.

jdzoom8

Thanks. Is there a wiring diagram which shows how the STOP fuse interacts with the ABS and Traction Control Systems. I found this one in the manual, but I do not see the STOP fuse. The reason why I ask, is because my ABS and Traction Control lights will not go off and that led me to the STOP fuse.

http://www.myrotarycar.com/portal/fo...343000W01.html

rx8cited

STOP fuse = Brake Lights only AFAIK ... but have a look for yourself!

jdzoom8

OK, thanks found the STOP wiring diagram to the brake lights. Any clue why the STOP fuse is blowing when the ABS and Traction control indicator lights are coming on if they are not wired together?

StealthTL

iTrader: (1)

Page F3 of the diagram shows the simple circuit - thru the fuse to the switch, then thru all three lamps to ground.

If it's not a bad socket or a pinched wire, you have to assume it's 'that' signal wire to the DCS, TCS and ABS......which probably means you'll never find it.

rx8cited

What happens if you put in a new STOP fuse, then push on the brake pedal for 1 minute without starting the car (no key in)? Does the fuse blow or not? If it does not blow, what happens to the fuse if you start the car? Have your replaced any of the brake lights prior to this problem starting?

jdzoom8

Ok, well I figured out that my 3rd brake light is causing the fuse to blow (Car on or off). The bulb in the light looked a little corroded, so I replaced it. I then pressed my brakes and the light bulb lit (no fuse blow) with my car off. I put everything back together and go to start the car to drive it and the fuse blows again?? I ran out of time to continue troubleshooting, but the only things left are the wire to the socket and the socket itself? Thoughts? I am not sure why the fuse did not blow with the car off........

For now I just disconnected the third brake light from the connector, so I at least have two functioning brake lights and my ABS and traction control indicator lights are no longer lit on my dashboard. Thanks for the help so far.

Any feedback?

rx8cited

jdzoom8, Is it all good still with the 3rd brake light removed?

teknics

short somewhere in that wire i think would be obvious, the 3rd brake light i believe is on a different leg of the harness.

I attached 4 pics, the first is connector 0918-1202 this is where the 3rd brake light connects to the rest of the brake wiring. Full location diagram.

The second is the 3rd brake light schematic. The B/Y wire going to the 3rd brake light is the thing you want to focus on most likely between the connectors 0918-1202(above attachment) and 0918-1203 (the next attachment).

3rd pic is of 0918-1203 connector, which is the connector at the area where the lightbulb goes into.

4th pic is the diagram of your wiring showing that b/y wire connects all systems you had problems with. ABS, DSC etc. That diagram is everything that is on the stop fuse's circuit. so simply by narrowing it to the 3rd brake light you can isolate the circuit. Find a short there somewhere, if not then it's somewhere after connector 0918-1202 which only has one other connector between it and the brake switch (which opens and close the stop fuse's circuit). But now you have one specific wire to test. And since disconnecting the buld fixes it im guessing it between the two connectors i posted pics of. That may be an individual harness available from the dealer if you wanna just give it a shot.

youre very close to finding it, dont give up yet.

kevin.

HWK11

iTrader: (2)

i have somewhat similar probelm with the turn signals. both left right and emergency doesnt work some times. i was thinking it was a short somewhere but i dont know where. =(

teknics

sounds like a loose 0918-1001 connector. Find it's wiring diagram you'll see the hazard switch and turn signal switch wiring is completely seperate. since both dont operate you can assume the problem comes from where they both start from. Leads back to the flasher control module, the only place both systems meet. So you could have an intermittently bad module, or what is more likely is a simple loose or dirty connection. The systems as i said never have their wires "touching" until they plug into the module.

thats assuming both those switches are actually becoming inop. If those actually are working fine then it's where the info from the module is output, again in connector 0918-1001, terminals G an D.

When your blinkers stop working do the arrows blink on your instrument cluster, do they stay lit up or do they not come on. After you answer that i could narrow it down further for you, save you some time.

[edit, i'll try to answer all 3 to cover bases:
if the arrows blink and none of your blinkers work the flasher module is operating and getting power to the outputs. since the lights are blinking you go to connectors C-09 and C-05 which are for the front and rear connectors. The chance of this happening is slim, a failure at two seperate connectors? Most likely your blinker lights would blink but either 1 or 2 will be out and it will be either fronts or rears. Thats what blinking arrows on the cluster show.

if the arrows just stay lit up and not blinking and your blinkers dont blink most likely either a bad module. Could be a ground in the wiring to the cluster arrow light but im not sure this would caus ethe light on and blinkers off, i think this would cause light on cluster and all blinkers lit up.

If the arrows never come on you either have a poor connection on connector 0918-1001 or a bad module since you said neither the turn signals or hazard switches work.
[end edit, think everything came out right, open to opinion, posting circuit diagram so everyone can look it over, i feel like im incorrect on some of that, not the best state of mind ATM]

Attached another image of where the module is located.

kevin.

HWK11

iTrader: (2)

blinkers on intrument cluter doesnt blink at all. and it feels different when i use the signal lever thing.

teknics

blinker light doesnt come on, ok, do the blinkers themselves work even tho the clusters do, i assume no?

kevin.

HWK11

iTrader: (2)

umm i coulnd check because the lever dosent click in place. this just started to happened yesterday afternoon, but it worked when i stopped to check what was wrong

teknics

lever doesnt click in? definitely fix that first then see what happens from there...could be not even sending signal or sending wrong one at wrong time to the module and confusing it.

kevin.

HWK11

iTrader: (2)

mm.. maybe. i think ill take it in to mazda and see if they can tell me whats wrong for free.
thanks for helping!

jdzoom8

Yes, still no problems without the 3rd brake light connected. The wire from the 3rd brake light has a connector right next to the cluster by the driver's side rear taillight. Right now I just unconnected it to avoid blowing the fuse and/or lighting up the ABS and traction control indicators until I figure out the problem.

jdzoom8

Thanks for the detailed feedback. Helpful.

teknics

Thank you for the appreciation. All i hope is that my post assists you in finding your problem finally. Blowing fuses sucks, and I had a car who's brake lights decided to fail at the exact wrong time, resulted in that car being totalled in a rear-end collision rather tragically.

kevin.

szym0n

ahh im having the same prob with the stop fuse blowing all the time. Need help..

Car is an 04 with 61K miles... When I turn on the car and press brake pedal for about 1-3 seconds the two lights go on and I check under the hood and the fuse is blown.

I checked the 3rd brake light wiring/harness...Seems to be fine but the bulb was blown. So replaced bulb and tried new fuse and still blows my fuse.

Then I check the wiring on L/R tails everything seems to be fine no wires loose.

Also when I turn the headlights to On...my L/R tail lights light up but the 3rd one doesn't. Does the 3rd one only go on when the brake pedal is pressed?

Need help.


Also....
Yest I put in a 25A fuse for the stop fuse...Lights didnt go off but when I started driving on the highway my brakes were stopping the car its self....it felt as if I was towing something and the car was just gonna stop. So I pulled over took out the fuse and car drove fine but the lights were on.

Help!

Spinning Sushi

iTrader: (21)

The third/center brake light does not stay illuminated until the brakes are applied.