Electric parking brake not working

dnorfolk · 08-29-2021, 07:22 PM

Just changed out my rear brake pads on my 2015 528i, and now the parking brake won't work.

I reset the brake service light, but now the parking brake does nothing. I've tried pulling, pushing, and resetting it, but still nothing.

I took the brakes back off to see if I did something wrong, but it looks right.

I got error code 4809C but I can't find any info on what this code means.

What did I do wrong?

Thanks

Unspec · 08-30-2021, 07:26 PM

Did you disengage the parking brake maintenance mode?

Blue Angel · 08-30-2021, 11:11 PM

Did you put the calipers into maintenance mode (like Unspec mentions) or did you disassemble the motor from the caliper and wind them in manually?

I did mine manually (before I had BimmerLink) and once finished I toggled the electronic parking brake switch and they set just fine.

Is it possible you damaged the plugs or wire harness?

Unspec · 08-31-2021, 09:37 AM

Based on OP's other post, they forced it back with the motor attached. I've read instances where this can damage the motor, which is what might have happened.

Blue Angel · 08-31-2021, 10:51 AM

That sounds like bad news… good luck dnorfolk, let us know how it turns out. Sorry for the bad pun… 😁

adyjoy · 09-22-2021, 03:57 PM

I have like this...Problem was electric module..

08-29-2021, 07:22 PM	#1
dnorfolk New Member 0 Rep 5 Posts Drives: BMW 528i Join Date: Aug 2021 Location: Atlanta, GA iTrader: (0)	Just changed out my rear brake pads on my 2015 528i, and now the parking brake won't work. I reset the brake service light, but now the parking brake does nothing. I've tried pulling, pushing, and resetting it, but still nothing. I took the brakes back off to see if I did something wrong, but it looks right. I got error code 4809C but I can't find any info on what this code means. What did I do wrong? Thanks
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08-30-2021, 07:26 PM	#2
Unspec Colonel 1295 Rep 2,587 Posts Drives: 2015 BMW 535xi Join Date: Apr 2019 Location: DMV iTrader: (1)	Did you disengage the parking brake maintenance mode? __________________ 2015 BMW 535xi Bootmod3 Stage 2 \| ER charge pipe \| ER Catted DP \| Remus Exhaust \| Gplus FMIC \| KW V3 \| Turner Monoball thrust arm bushings \| Wallet regrets ISTA VM Setup/Tutorial
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08-30-2021, 11:11 PM	#3
Blue Angel Major 996 Rep 1,035 Posts Drives: 2011 323i and 2016 535d Join Date: Mar 2011 Location: Ottawa, ON iTrader: (0)	Did you put the calipers into maintenance mode (like Unspec mentions) or did you disassemble the motor from the caliper and wind them in manually? I did mine manually (before I had BimmerLink) and once finished I toggled the electronic parking brake switch and they set just fine. Is it possible you damaged the plugs or wire harness?
	Appreciate 1 dnorfolk0.00 Quote

08-31-2021, 09:37 AM	#4
Unspec Colonel 1295 Rep 2,587 Posts Drives: 2015 BMW 535xi Join Date: Apr 2019 Location: DMV iTrader: (1)	Based on OP's other post, they forced it back with the motor attached. I've read instances where this can damage the motor, which is what might have happened. __________________ 2015 BMW 535xi Bootmod3 Stage 2 \| ER charge pipe \| ER Catted DP \| Remus Exhaust \| Gplus FMIC \| KW V3 \| Turner Monoball thrust arm bushings \| Wallet regrets ISTA VM Setup/Tutorial
	Appreciate 1 dnorfolk0.00 Quote

08-31-2021, 10:51 AM	#5
Blue Angel Major 996 Rep 1,035 Posts Drives: 2011 323i and 2016 535d Join Date: Mar 2011 Location: Ottawa, ON iTrader: (0)	That sounds like bad news… good luck dnorfolk, let us know how it turns out. Sorry for the bad pun… 😁
	Appreciate 1 dnorfolk0.00 Quote

09-22-2021, 03:57 PM	#6
adyjoy New Member 2 Rep 12 Posts Drives: BMW F10 Join Date: Sep 2021 Location: Romania iTrader: (0)	I have like this...Problem was electric module..
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