BMW X5
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read

Post Reply
 
Thread Tools Search this Thread
      11-27-2019, 06:32 AM   #1
gofast182
Second Lieutenant
102
Rep
247
Posts

Drives: 2017 340i xDrive M-Sport
Join Date: Jan 2019
Location: New Jersey

iTrader: (0)

Changing G05 Brake Pads

I've still got a ways to go before I need new pads but when I got the G05 I was looking forward to doing that work myself (we have the M-Sport brakes). Later I read that there's a sensor or something that needs to be reset and it's not easy to do? Does anyone have experience with this?
Appreciate 0
      11-27-2019, 07:56 AM   #2
Ninefourteener
Private First Class
46
Rep
193
Posts

Drives: 2020 X5 M50i
Join Date: Sep 2019
Location: American in Belgium

iTrader: (0)

In addition to being a mechanic, I've also owned 2 BMW in the past, and installed, uninstalled, and then re-installed an M performance Big Brake Kit on both cars.... and done brake jobs on at least 100 more cars over the past 25 years. While I don't own my G05 yet, I can answer this question pretty thoroughly.

The sensor you are referring to is just a "wire" that has a connection inside the wheelwell, as well as the brake pad itself. It just snaps in - No tools are required, and it is quite simple. And, although BMW will tell you otherwise, unless you wear down your brake pads to the bare minimum, you do not need to replace them unless they are damaged. I used the last set of sensors on2 brake pad changes (neither were more than 50% worn though). The sensor is a Male U-shaped "plug" that snaps into a female U-shaped portion on the base of the brake pad. its designed to be "destroyed" when your pads get too thin, and warn you beforehand. Change your pads at 50-60%, and you can re-use the sensors.

Note, the sensor "wire" has a SOLID copper core.... not braided like most copper wire. Consequently, it breaks easily if you coil or bend it (I know from personal experience). So... be careful with it, dont bend it too sharply,,,, but essentially its just a wire

Front calipers are monobloc style, meaning you don't even have to remove the calipers to change the pads. Pads are held in with 2 pins. All you need to change the pads is a set of pliers to pull the pins out. You will need to compress the 4 pistons before installing the new (thicker) brake pads. As with all multi-piston calipers, removing the brake reservoir cap makes it easier. If not, compressing one piston causes another to protrude.

The rear calipers are "old school" single piston design (which drives me crazy). Simple install - remove the lower caliper bolt, loosen the upper, swing the caliper up, change pads, re-install, re-tighten.

There is an added level of complexity with the rear calipers, because as of 2019, BMW incorporated an electronic e-brake into the caliper (hence, making multi-piston caliper upgrades impossible), but that shouldn't affect the way the pads are changed.

It's a straight-forward job, even for a basic mechanic. Nothing "electronic" or "coding" related needs to occur, so you don't need BMWs involvement.
__________________
2020 X5 M50i - On order, expected Jan 2020
- Alpine white, Coffee, Lux seat, poplar, Executive
- 21" Y-spoke, Ext shadow, Tow pack, 2 axle air
- Bowers & Wilkins, Acoustic glass
- TONS of extras waiting

Last edited by Ninefourteener; 11-27-2019 at 08:16 AM..
Appreciate 1
VTENGR178.50

      12-02-2019, 11:45 AM   #3
gofast182
Second Lieutenant
102
Rep
247
Posts

Drives: 2017 340i xDrive M-Sport
Join Date: Jan 2019
Location: New Jersey

iTrader: (0)

Are you sure about that? This guy who changed pads on his G05 says otherwise.

https://g05.bimmerpost.com/forums/sh...t=brake+sensor

From the thread linked above:
"The pads are easy to change, but unfortunately BMW has made this a non DIY project. The reason is you used to be able to push your pistons in on the floating rear caliper, drop your pads in and go. Now the G body cars have calipers that have to be retracted with a computer. If you don't, your dash will light up with errors and alerts. I have a friend that has the software to retract the rotors for me so I did the job myself."

"I was told this started in all the G chassis cars. Iím not talking about the pad wear sensor that clips into the top of the pad. Thereís something in the caliper that tracks the pistons position within the caliper. When you manually move the piston, the car gets confused on the position of the piston and lights up your dash. You can manually move the positions, but there is a chance for damage BMW says, and then go to the dealership and have everything reset. I imagine theyíll charge you an hour of labor. Just keep in mind the car may not brake properly if itís confused on the pistons position."
Appreciate 0
      12-04-2019, 02:58 AM   #4
Ninefourteener
Private First Class
46
Rep
193
Posts

Drives: 2020 X5 M50i
Join Date: Sep 2019
Location: American in Belgium

iTrader: (0)

Quote:
Originally Posted by gofast182 View Post
Are you sure about that? This guy who changed pads on his G05 says otherwise.

https://g05.bimmerpost.com/forums/sh...t=brake+sensor

From the thread linked above:
"The pads are easy to change, but unfortunately BMW has made this a non DIY project. The reason is you used to be able to push your pistons in on the floating rear caliper, drop your pads in and go. Now the G body cars have calipers that have to be retracted with a computer. If you don't, your dash will light up with errors and alerts. I have a friend that has the software to retract the rotors for me so I did the job myself."


"I was told this started in all the G chassis cars. Iím not talking about the pad wear sensor that clips into the top of the pad. Thereís something in the caliper that tracks the pistons position within the caliper. When you manually move the piston, the car gets confused on the position of the piston and lights up your dash. You can manually move the positions, but there is a chance for damage BMW says, and then go to the dealership and have everything reset. I imagine theyíll charge you an hour of labor. Just keep in mind the car may not brake properly if itís confused on the pistons position."

No..... I didn't know that..... but it's quite interesting to hear.
__________________
2020 X5 M50i - On order, expected Jan 2020
- Alpine white, Coffee, Lux seat, poplar, Executive
- 21" Y-spoke, Ext shadow, Tow pack, 2 axle air
- Bowers & Wilkins, Acoustic glass
- TONS of extras waiting
Appreciate 0
      12-04-2019, 06:38 AM   #5
gofast182
Second Lieutenant
102
Rep
247
Posts

Drives: 2017 340i xDrive M-Sport
Join Date: Jan 2019
Location: New Jersey

iTrader: (0)

So does anyone know what it would take to do this at home?
Appreciate 0
Post Reply

Bookmarks

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



All times are GMT -5. The time now is 08:03 AM.




xbimmers
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST