Brake sensor light won't reset

builderman · 03-05-2023, 07:58 PM

I’m brand new here, so I don’t know if I’m in the right place.

I have 2020 X5 xDrive40i. Just put new brake pads and new wear sensor on front. Brake light on dash won’t go off, and I’ve tried everything to reset it. Did the diagnostic mode, holding BC button, but no brake pad option appears. Only oil, and brake fluid, both showing reset impossible. Got into the hidden menu and did the brake service option there, and still no reset. Disconnected battery and left lights on to drain everything. Reconnected, but brake light still on. Frustration level is now off the charts. Does anyone know what the secret is??

MMnut · 03-05-2023, 10:34 PM

You need to release hand brake / parking brake first before any attempt to reset brake pad light.

builderman · 03-06-2023, 06:58 AM

Have tried resetting with emergency brake on, and with it off. Still didn’t work.

jzeiler4 · 03-06-2023, 08:11 PM

Double check that the connectors are fully seated on the sensors, an open circuit will cause the light.

emy24x · 07-06-2023, 11:13 AM

I’m having the same issue. Did you manage to reset it?

Tambohamilton · 07-08-2023, 02:40 AM

Quote:

Originally Posted by emy24x

I’m having the same issue. Did you manage to reset it?

The ECU measures the resistance of the sensor in order to identify that specific sensor. If you reset without changing the sensor, it will detect that the sensor hasn't been changed and the reset will fail. So to reset you need to disconnect the sensor and jump the pins of the plug directly while you reset. Then reconnect the sensor.

YMMV

JustMeLeo · 03-27-2024, 09:21 AM

Quote:

Originally Posted by emy24x

I’m having the same issue. Did you manage to reset it?

Did you ever figure out what was wrong?

JustMeLeo · 03-27-2024, 09:32 AM

Quote:

Originally Posted by builderman

Have tried resetting with emergency brake on, and with it off. Still didn’t work.

Were you able to resolve this? I had tried everything you mention with no luck. not even with the obd scanner.

03-05-2023, 07:58 PM	#1
builderman Registered 2 Rep 2 Posts Drives: 2020 X5 xDrive40i Join Date: Mar 2023 Location: Tennessee iTrader: (0) Garage List [0.00]	Brake sensor light won't reset I’m brand new here, so I don’t know if I’m in the right place. I have 2020 X5 xDrive40i. Just put new brake pads and new wear sensor on front. Brake light on dash won’t go off, and I’ve tried everything to reset it. Did the diagnostic mode, holding BC button, but no brake pad option appears. Only oil, and brake fluid, both showing reset impossible. Got into the hidden menu and did the brake service option there, and still no reset. Disconnected battery and left lights on to drain everything. Reconnected, but brake light still on. Frustration level is now off the charts. Does anyone know what the secret is??
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03-05-2023, 10:34 PM	#2
MMnut First Lieutenant 470 Rep 337 Posts Drives: M4 Join Date: May 2021 Location: AU iTrader: (0)	You need to release hand brake / parking brake first before any attempt to reset brake pad light.
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03-06-2023, 06:58 AM	#3
builderman Registered 2 Rep 2 Posts Drives: 2020 X5 xDrive40i Join Date: Mar 2023 Location: Tennessee iTrader: (0) Garage List [0.00]	Have tried resetting with emergency brake on, and with it off. Still didn’t work.
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03-06-2023, 08:11 PM	#4
jzeiler4 Lieutenant 320 Rep 536 Posts Drives: 2021 M240i xDrive vert Join Date: Aug 2020 Location: Hazel Green, AL iTrader: (0)	Double check that the connectors are fully seated on the sensors, an open circuit will cause the light.
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07-06-2023, 11:13 AM	#5
emy24x Registered 0 Rep 1 Posts Drives: BMW 218i Gran Coupe Join Date: Jul 2023 Location: UK iTrader: (0)	I’m having the same issue. Did you manage to reset it?
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