Anything else turn on the brake pad wear light? - North American Motoring


Stock Problems/Issues Discussions related to warranty related issues and repairs, or other problems with the OEM parts and software for MINI Cooper (R50), Cabrio (R52), and Cooper S (R53) MINIs.
Sponsored by:
Sponsored by:

Anything else turn on the brake pad wear light?

Reply
 
 
 
Thread Tools Search this Thread
  #1  
Old 07-04-2018, 07:31 PM
Racingguy04 Racingguy04 is offline
4th Gear
Thread Starter
 
Join Date: Sep 2012
Posts: 482
Thanked 4 Times in 4 Posts
Anything else turn on the brake pad wear light?

My brake pad wear light came on today, but the pads only have 15,000 miles on them. I also have the rear sensor zip tied out of the way, so the only way that light should come on (I think) is if the front left pads are worn and need replacing, but the pads look fine and should have plenty of life left in them. Is there anything else that would turn on that light?

I'm currently driving cross country, so I haven't had a chance to pull the wheel off and get a good look at the pad an sensor, so that might be it, but it's going to be awhile before I can really look into this, but is there anything else I should look into? the brake fluid level is good.
Reply With Quote
  #2  
Old 07-04-2018, 08:54 PM
pnwR53S's Avatar
pnwR53S pnwR53S is online now
6th Gear - NAM Hall of Fame
 
Join Date: Apr 2017
Location: soggy pnw
Posts: 2,385
Thanked 197 Times in 192 Posts
Brake fluid level low trigger a different light if I haven't mistaken. It happen to me at the track, and not on the light with the symbol of a orange brake disc. I think brake fluid indicator is red.

One possibility in your case may the blue barrel connector for the pad sensor disconnected.
Reply With Quote
  #3  
Old 07-04-2018, 08:58 PM
Racingguy04 Racingguy04 is offline
4th Gear
Thread Starter
 
Join Date: Sep 2012
Posts: 482
Thanked 4 Times in 4 Posts
Bummer, I was really hoping it might be brake fluid. Thanks, I'll definitely check the sensor, I even ordered a new one so I can replace it, though I'm having serious thoughts bout splicing the wires together and zip tieing the front one out of the way like i did the rear.

All my tools are in the moving truck, and my car is back on the trailer, but I did get to drive the legendary dragon today, so if you're going to get a warning light, it may as well be on an epic drive, right?
Reply With Quote
  #4  
Old 07-04-2018, 09:03 PM
pnwR53S's Avatar
pnwR53S pnwR53S is online now
6th Gear - NAM Hall of Fame
 
Join Date: Apr 2017
Location: soggy pnw
Posts: 2,385
Thanked 197 Times in 192 Posts
I got my red warning light doing high G turns. It came and went and I initially thought it was the parking brake. The fluid was right between min and max. I later notice my friend's M3 race car had the fluid sensor disconnected.
Reply With Quote
  #5  
Old 07-08-2018, 08:09 PM
Racingguy04 Racingguy04 is offline
4th Gear
Thread Starter
 
Join Date: Sep 2012
Posts: 482
Thanked 4 Times in 4 Posts
So an update, but no solution yet. I finally had a chance to pull the wheels off the car, and the brake pads are fine, but surprisingly, so are the wear sensors. neither of them are tripped. So I cleaned the rear sensor connection, and put some dielectric grease in it, reset the light, and took it for a drive. The light stayed off, until I went over a bump. So I'm thinking I've got a short or a loose connection. The rear sensor looked fine, and I went ahead and ordered a new front sensor, so next chance I get, I'm going to swap out the front sensor and give it the same cleaning too, hopefully that fixes it. I'm a little nervous I may have a short somewhere in the car's wiring harness, which sounds like a pain to deal with.

Is there any reason not to use dielectric grease on those plugs? It's not something I know tons about, but it seems like a good idea.
Reply With Quote
  #6  
Old 07-09-2018, 09:24 AM
twokbolt twokbolt is offline
1st Gear
 
Join Date: Jun 2018
Posts: 14
Thanks: 0
Thanked 1 Time in 1 Post
Disconnect each sensor separately and see which one makes the light go out. If it was me I'd buy two new sensors, install them, and go on my merry way.
Reply With Quote
  #7  
Old 07-09-2018, 01:58 PM
NC TRACKRAT's Avatar
NC TRACKRAT NC TRACKRAT is offline
5th Gear
iTrader: (4)
 
Join Date: May 2006
Posts: 1,051
Thanks: 0
Thanked 6 Times in 6 Posts
O.K. to use the grease on the connectors but nowhere near the rotors or calipers. Me, I'd just unplug and take them off. If you still get a light, you'll know the trouble is upstream in the wiring harness.
Reply With Quote
  #8  
Old 07-09-2018, 02:18 PM
pnwR53S's Avatar
pnwR53S pnwR53S is online now
6th Gear - NAM Hall of Fame
 
Join Date: Apr 2017
Location: soggy pnw
Posts: 2,385
Thanked 197 Times in 192 Posts
My take is the problem is not in the chassis harness upstream from the blue tubular connector. Don't forget. When the pads are well the two conductors are shorted at the pad. As you wear down the pad lining you grind away the conductive "bridge" at the sensor.

Modern cars' harness are very well made and shorts are next to impossible unless someone mess with it, or cause abrasion to the wire jacket. I bet a donut to a dollar the problem lies between the blue tubular connector towards the dispensable pad wear sensor.

Again to reiterate, when all is well the two conductors are shorted. An open circuit lights up the pad wear indicator. Also dielectric grease do squad for low resistance contact like this. Just make sure you remove any oxidation at the contact. Dielectric grease only acts as water/moisture barrier but will not improve the conductivity of the electrical contacts.
Reply With Quote
  #9  
Old 07-11-2018, 05:46 PM
Racingguy04 Racingguy04 is offline
4th Gear
Thread Starter
 
Join Date: Sep 2012
Posts: 482
Thanked 4 Times in 4 Posts
Ok, so I replaced the front sensor, but the light is still coming on, so I ordered a rear sensor, and I'll replace that when it comes. If I just unplug the sensors will the light turn off? I'm not really that concerned about having wear sensors, I'm just tired of seeing that light on my dash.
Reply With Quote
  #10  
Old 07-11-2018, 06:33 PM
NC TRACKRAT's Avatar
NC TRACKRAT NC TRACKRAT is offline
5th Gear
iTrader: (4)
 
Join Date: May 2006
Posts: 1,051
Thanks: 0
Thanked 6 Times in 6 Posts
pnwR53S is correct and I didn't explain sufficiently. If you unplug the sensors, you'll need to make a jumper to bridge the two exposed contacts. After doing that, your light should go out, proving that the sensor is faulty. If the light stays on, your problem is upstream.
Reply With Quote
  #11  
Old 07-11-2018, 07:54 PM
Racingguy04 Racingguy04 is offline
4th Gear
Thread Starter
 
Join Date: Sep 2012
Posts: 482
Thanked 4 Times in 4 Posts
Quote:
Originally Posted by NC TRACKRAT View Post
pnwR53S is correct and I didn't explain sufficiently. If you unplug the sensors, you'll need to make a jumper to bridge the two exposed contacts. After doing that, your light should go out, proving that the sensor is faulty. If the light stays on, your problem is upstream.



Ah, ok, that makes sense. Well I think I'll just slap on a new rear sensor and go from there. I know that at least one of the plastic clips that holds the front wiring harness for the sensor is broken, I ziptied it a couple of months ago when I was replacing my alternator and changing my coolant, so I'm kind of worried that I've had some rubbing there, but we'll see what I can find this weekend.
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
new brake pad wear sensor does not clear warning light buckeydad Stock Problems/Issues 4 06-22-2018 03:54 PM
Brake Wear Light Won't Turn Off rustledjimmies R56 :: Hatch Talk (2007+) 6 05-21-2015 05:18 AM
Brake pad wear sensor light issue (Search was used, need advice) MINIsotaS Stock Problems/Issues 24 02-09-2014 09:06 PM
help? Brake pad light just turn on musumekiller Tires, Wheels, & Brakes 4 08-08-2007 10:35 AM
When the Brake Pad Wear Light Comes On... BearX220 R50/R53 :: Hatch Talk (2002-2006) 3 06-16-2005 05:21 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -7. The time now is 12:23 PM.


North American Motoring is an independently operated web site supporting MINI owners and enthusiastsworldwide. As such it has no official relationship with MINI USA, BMW AG, or BMW of North America.All original artwork and design is Copyright © 2002-2004 North American Motoring.
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.