Join Date: Dec 2012 Location: Edmonton, AB Posts: 9 Likes: 0 Received 0 Likes on 0 Posts
Possible to replace brake pad sensor without removing pads? Have owned 40 some vehicles and a mini has always been on the list. Picked up a 07 MCS with 40k miles this weekend and the warning lights are lit up like a Christmas tree. Oil, no problem to fix. Front and rear brake lights are on and way past mileage wise. Pulled the wheels and the pads look thick and new. Makes me think someone replaced the brakes but not the sensors. Was going to take it to the dealer but figure that's a good way to rack up my credit card. Can I purchase and replace the two sensors without having to pull the pads out? Thanks!
Join Date: May 2007 Location: Mountain View, CA Posts: 3,535 Likes: 0 Received 1 Like on 1 Post
You can replace the sensor without the pads, if you're sure the pad has enough on it. The sensor just clips into a notch on the pad. The min spec is 3mm. The sensor goes off at 6mm for stage 1 which sets the countdown to about 6000 miles (and 3mm to bring up the red light). Its a pain getting under the wheel arch liner to get to the sensor socket.
Join Date: Dec 2012 Location: Edmonton, AB Posts: 9 Likes: 0 Received 0 Likes on 0 Posts
Quote:
Originally Posted by Btwyx  You can replace the sensor without the pads, if you're sure the pad has enough on it. The sensor just clips into a notch on the pad. The min spec is 3mm. The sensor goes off at 6mm for stage 1 which sets the countdown to about 6000 miles (and 3mm to bring up the red light). Its a pain getting under the wheel arch liner to get to the sensor socket. Thanks! So I can clip the sensor in place on the pad without having to take the pad out of the caliper?
Join Date: Jun 2012 Posts: 848 Likes: 0 Received 26 Likes on 24 Posts
Yeah, it pulls out through the opening in the top of the caliper. I used needle nose pliers to pull mine. Make sure the little metal retainer piece comes out with it too. --Matt
Join Date: Jul 2006 Location: Melbourne, FL Posts: 7,025 Received 273 Likes on 232 Posts
first check to see if there are even sensors where they are supposed to be! IME getting a worn sensor out of the worn pad can be a PIA - I destroyed mine in the process. It is possible the prior owner just cut the old sensor wires and tossed the sensor with the old pads and din't replace anything - this leaves an open circuit which the car continues to read as 'worn pads'. IF this is what happened you might decide you don't really need those sensors anyway - just like the PO did. I don't use 'em. My 02 didn't come with them. You can make the light go out IF PO didn't remove the entire shootin match. If the wire is there all you have is two ends of a loop. strip back the ends and tie them together. I solder 'em and shrink wrap for water tightness, then zip tie out of the way. Then do the regular 'reset'. The miles counter will still count down - but when it gets low just reset it again (good time for a visual check of pad wear!). You'll never get the actual worn pad warning because the car will never see the sensor loop broken.... If however PO removed the entire sensor all the way back to where it plugs in . . you can not make the warning go away because the car will see this open circuit. You need some way to connect the ends - close the open circuit...
Join Date: Dec 2012 Location: Edmonton, AB Posts: 9 Likes: 0 Received 0 Likes on 0 Posts
Quote:
Originally Posted by Capt_bj first check to see if there are even sensors where they are supposed to be! IME getting a worn sensor out of the worn pad can be a PIA - I destroyed mine in the process. It is possible the prior owner just cut the old sensor wires and tossed the sensor with the old pads and din't replace anything - this leaves an open circuit which the car continues to read as 'worn pads'. IF this is what happened you might decide you don't really need those sensors anyway - just like the PO did. I don't use 'em. My 02 didn't come with them. You can make the light go out IF PO didn't remove the entire shootin match. If the wire is there all you have is two ends of a loop. strip back the ends and tie them together. I solder 'em and shrink wrap for water tightness, then zip tie out of the way. Then do the regular 'reset'. The miles counter will still count down - but when it gets low just reset it again (good time for a visual check of pad wear!). You'll never get the actual worn pad warning because the car will never see the sensor loop broken.... If however PO removed the entire sensor all the way back to where it plugs in . . you can not make the warning go away because the car will see this open circuit. You need some way to connect the ends - close the open circuit... Thanks! The front driver side sensor is definitely there. I'll take a closer look at the rear passenger side wheel when I get a chance. I want to resolve this quickly so I'm going to see how much Mini wants for the sensors. I'm scared already.
Join Date: Dec 2012 Location: Edmonton, AB Posts: 9 Likes: 0 Received 0 Likes on 0 Posts
Quote:
Originally Posted by Capt_bj first check to see if there are even sensors where they are supposed to be! IME getting a worn sensor out of the worn pad can be a PIA - I destroyed mine in the process. It is possible the prior owner just cut the old sensor wires and tossed the sensor with the old pads and din't replace anything - this leaves an open circuit which the car continues to read as 'worn pads'. IF this is what happened you might decide you don't really need those sensors anyway - just like the PO did. I don't use 'em. My 02 didn't come with them. You can make the light go out IF PO didn't remove the entire shootin match. If the wire is there all you have is two ends of a loop. strip back the ends and tie them together. I solder 'em and shrink wrap for water tightness, then zip tie out of the way. Then do the regular 'reset'. The miles counter will still count down - but when it gets low just reset it again (good time for a visual check of pad wear!). You'll never get the actual worn pad warning because the car will never see the sensor loop broken.... If however PO removed the entire sensor all the way back to where it plugs in . . you can not make the warning go away because the car will see this open circuit. You need some way to connect the ends - close the open circuit... Definitely saw the front left sensor in place but didn't look closely at the right rear. Will take a closer look today and hopefully the sensors at the mini dealership aren't ridiculously expensive!
tawheed - If you need new ones the full selection from Genuine MINI to aftermarket is linked in the pictures above. Hope you can find your problem. Since the front one is there, I would also make sure they are connected correctly at the female connect end, you have to push the plastic boot all the way in till it clicks. Good luck.
Join Date: Jul 2006 Location: Melbourne, FL Posts: 7,025 Received 273 Likes on 232 Posts
is it also possible that OP replaced the pads AND the sensors but didn't reset the system. Why don't you try that b4 spending anything? from MiniMania: After replacing the worn sensor, reset the service light with the following procedure: For Gen 2 2007+ R56 Hatchbacks, 2008+ R55 CLUBMAN, and 2009+ R57 Convertibles To enter the service Menu: A. Insert Key B. Do not press clutch / brake C. Press Start button D. Wait until the Car / revelant Service symbol disappears on the Rev counter display E. Immediately after the symbol goes out - Press and hold Both buttons on the Rev Counter F. Continue to hold - the system Will run a dash light check G. Continue to hold H. Display will then show VIN / Menu, - continue to hold through this until the time Reappears on the display. I. Now release Only the Right hand Button (trip reset) for about a second, and then press and hold again (whilst still holding the LH button) J. After another second of 2 the display will show the Front Brake Symbol You Are Now in the Service Menu:D K. Use the BC Button (on indicator stalk) to scroll through to the relevant symbol - eg Rear Brakes L. To Reset the warning indicator light - Press & Hold the BC Button at the revelant symbol until RESET appears - then press and hold again until the process is complete. Turn Off and On the Ignition again - Warning should now have gone! ********************** if the sensors are there but used, you'll get the worn pad warning almost immediately. if the system resets, you're good to go and cost nothing if the sensors are there but used, I'd jumper 'em then do the reset. How hard is it to check for pad wear?You may to reset both ends - front and back have sep' reminders
Join Date: Feb 2008 Location: Graham, NC Posts: 2,358 Likes: 0 Received 1 Like on 1 Post
fwiw, a little easier way to reset the service reminders: 1.Turn on vehicle without starting the engine. 2.Wait for vehicle to cycle through all checks. 3.Press and hold the trip odometer button for approximately 10 seconds (only takes about 4 seconds for me) until the service job displays in the LCD. 4.The upper display will show the service symbol, e.g. an oil can for oil change. 5.The lower display will indicate the time or distance remaining until the next service is due for that item. 6.Press the OBC button (on the end of the turn signal stalk) repeatedly to scroll through the service items. 7.When you are on the item you want to reset, press and hold the OBC button until “RESET” appears in the lower display. Once RESET appears, you can release the OBC button. 8.Press the OBC button again to reset the service shown. One advantage that I have found to this method is that it does not reset the trip odometer.
Join Date: May 2007 Location: Mountain View, CA Posts: 3,535 Likes: 0 Received 1 Like on 1 Post
I've found that different MINIs respond to one or other of those ways of resetting the service indicator. I'm not sure if its specific to model year or what. If one doesn't work, try the other.
Join Date: Jul 2006 Location: Melbourne, FL Posts: 7,025 Received 273 Likes on 232 Posts
I believe it depends the service item . . . some take the easy way and some don't I THINK you can reset 'counters' the easy way, but actual sensors like the brakes need the long proceedure
Join Date: Dec 2012 Location: Edmonton, AB Posts: 9 Likes: 0 Received 0 Likes on 0 Posts
Quote:
Originally Posted by Capt_bj is it also possible that OP replaced the pads AND the sensors but didn't reset the system. Why don't you try that b4 spending anything? from MiniMania: After replacing the worn sensor, reset the service light with the following procedure: For Gen 2 2007+ R56 Hatchbacks, 2008+ R55 CLUBMAN, and 2009+ R57 Convertibles To enter the service Menu: A. Insert Key B. Do not press clutch / brake C. Press Start button D. Wait until the Car / revelant Service symbol disappears on the Rev counter display E. Immediately after the symbol goes out - Press and hold Both buttons on the Rev Counter F. Continue to hold - the system Will run a dash light check G. Continue to hold H. Display will then show VIN / Menu, - continue to hold through this until the time Reappears on the display. I. Now release Only the Right hand Button (trip reset) for about a second, and then press and hold again (whilst still holding the LH button) J. After another second of 2 the display will show the Front Brake Symbol You Are Now in the Service Menu:D K. Use the BC Button (on indicator stalk) to scroll through to the relevant symbol - eg Rear Brakes L. To Reset the warning indicator light - Press & Hold the BC Button at the revelant symbol until RESET appears - then press and hold again until the process is complete. Turn Off and On the Ignition again - Warning should now have gone! ********************** if the sensors are there but used, you'll get the worn pad warning almost immediately. if the system resets, you're good to go and cost nothing if the sensors are there but used, I'd jumper 'em then do the reset. How hard is it to check for pad wear?You may to reset both ends - front and back have sep' reminders When I saw the pads were thick, this is the first thing I tried and though it gives me the reset option and the little clock turns for a few seconds, it does not reset. Which is why I'm looking at swapping the sensors.
Join Date: Jul 2006 Location: Melbourne, FL Posts: 7,025 Received 273 Likes on 232 Posts
if you do get the sensor out .... mine broke b4 I could get them out a new sensor should have a clean black plastic tip. When this tip gets work off by the rotor, as the pad material gets thinner, it exposes a loop of wire that eventually get broken. Here's the end of my sensor still in the worn pad and I'm circled the two tips of the wire, embedded in the plastic body of the sensor ...
Join Date: May 2007 Location: Mountain View, CA Posts: 3,535 Likes: 0 Received 1 Like on 1 Post
Quote:
Originally Posted by tawheed When I saw the pads were thick, this is the first thing I tried and though it gives me the reset option and the little clock turns for a few seconds, it does not reset. Which is why I'm looking at swapping the sensors. That's what happened to me with a sensor worn to stage 1, but not yet stage 2 and the red light. That was when I learnt the sensors were 2 stage. Changing the sensor allowed it to reset. |
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