Do I need to get new sensors if i changed brake pads?

Justinandwhat · 03-01-2018, 12:26 AM

My dealer quoted me almost 400 to get pads changed so I’m just gonna do it myself. I’m wondering if i need to change the sensors. And a instruction will be helpful as well. Thank you!! Btw it’s a 2013 335 xdrive

oceanview · 03-01-2018, 06:32 AM

If the sensors are not worn/cut from the rotor and if you can handle it carfully to get them off the pads you can reuse them.
(one front, one rear sensor)

oksymoroni · 03-01-2018, 02:20 PM

When I changed the rear brake pads on my old 2011 535i, I couldn't clear the Brake Fault light until I changed the sensors. They weren't that expensive and were pretty easy to swap out if I remember right. Once again that was on an F10...

1QuikWS6 · 03-01-2018, 02:46 PM

I would (and I do every time I change the pads) they are only $20 ea

If the warning light was up on the dash - then most definitely

Even if the brake warning has not come up, the end of the sensor that plugs into slot of pad is plastic & gets brittle over time from heat. Sometimes they break when either pulling them out or pushing them back in the slot (fitment is very tight)

At that point, during a pad replacement, if the sensor breaks you're SOL if you don't have a new set, you will have to put up with warning on dash, and then take the wheel off again to install once you get the new sensors...

Justinandwhat · 03-01-2018, 03:00 PM

Thanks everyone for relying!! I will just buy 2 to swab them

.

Billfitz · 03-01-2018, 03:02 PM

Quote:

Originally Posted by oksymoroni

When I changed the rear brake pads on my old 2011 535i, I couldn't clear the Brake Fault light until I changed the sensors.

+1. I tried using the old one, and when the car wouldn't update it I plugged in my Foxwell 510 to try with that. It told me that the car said the sensor had been tripped and it had to be replaced to update the service interval. I replaced it (had already bought it with the pads) and the dashboard update tool worked. Don't ask me how the car knew the difference between the old sensor and the new, but it did.

1QuikWS6 · 03-01-2018, 03:04 PM

Quote:

Originally Posted by Justinandwhat

Thanks everyone for relying!! I will just buy 2 to swab them

.

Good decision

03-01-2018, 12:26 AM	#1
Justinandwhat First Lieutenant 126 Rep 372 Posts Drives: 2013 335i xDrive Join Date: Apr 2016 Location: Indianapolis iTrader: (0)	Do I need to get new sensors if i changed brake pads? My dealer quoted me almost 400 to get pads changed so I’m just gonna do it myself. I’m wondering if i need to change the sensors. And a instruction will be helpful as well. Thank you!! Btw it’s a 2013 335 xdrive
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03-01-2018, 06:32 AM	#2
oceanview Captain 207 Rep 603 Posts Drives: 335i F31 RWD Autom. Join Date: May 2013 Location: Switzerland iTrader: (0)	If the sensors are not worn/cut from the rotor and if you can handle it carfully to get them off the pads you can reuse them. (one front, one rear sensor) __________________ 335i F31 RWD in SB \|\| Powertrain: Active Autowerke Flash Tune Stage 1 \| AA Charge Pipe \| AA FMIC \| GFB DV+ \| xHD Trans-Flash \| Quaife LSD \| Cyba 3.5" Carbon tips \|\| Chassis: 20" 405M \| Wiechers Strut Bar \| Rear M-Diffusor \|\| Brakes: 18" M-Perf Brake orange 370/345 \| EBC YellowStuff pads all around \|\| Various: LED bulbs: Fog-L. front \| Turn Signal f&r \| Brake L. \| Reverse L. \| Rear L. \| Rear Fog L.
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03-01-2018, 02:20 PM	#3
oksymoroni Second Lieutenant 251 Rep 233 Posts Drives: 2017 340i Join Date: May 2010 Location: Chicago iTrader: (0)	When I changed the rear brake pads on my old 2011 535i, I couldn't clear the Brake Fault light until I changed the sensors. They weren't that expensive and were pretty easy to swap out if I remember right. Once again that was on an F10...
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03-01-2018, 02:46 PM	#4
1QuikWS6 No 55mph 1622 Rep 8,477 Posts Drives: F32 435ix MSport Join Date: Jul 2009 Location: Blitzburgh, PA iTrader: (113) Garage List 2022 BMW M440ix Vert [0.00] 2015 BMW 435ix MSport [0.00] 2000 Pontiac Trans Am [0.00]	I would (and I do every time I change the pads) they are only $20 ea If the warning light was up on the dash - then most definitely Even if the brake warning has not come up, the end of the sensor that plugs into slot of pad is plastic & gets brittle over time from heat. Sometimes they break when either pulling them out or pushing them back in the slot (fitment is very tight) At that point, during a pad replacement, if the sensor breaks you're SOL if you don't have a new set, you will have to put up with warning on dash, and then take the wheel off again to install once you get the new sensors... __________________ F32 435ix//MGM//M Sport-Prem-Tech-Driver Assist-Lighting-Cold Weather-Dyn Handling Pkgs//M4 Black Lthr Int w/M4 Alum Blade Trim//HK w/Bavsound Stg3//763M//M4 Euro LCI Tails//M4 Mirrors w/CF Covers//AWCarbon CF F/R Spoilers-Side Splitters-Diffuser 6WB/ID6 HU+HUD/IND M4 Alcantara Armrest//PURE S2 Turbo//AA FMIC+DP//ER CP+TIC//3.5bar TMAP/TS DV//AWE Tuning Exh w/Blk Tips//Turner MS CF Intake//BM3 Cary Jordan Tune//MPerf Diff//PrecRW Ignition Kit
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03-01-2018, 03:00 PM	#5
Justinandwhat First Lieutenant 126 Rep 372 Posts Drives: 2013 335i xDrive Join Date: Apr 2016 Location: Indianapolis iTrader: (0)	Thanks everyone for relying!! I will just buy 2 to swab them .
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