Few issues

CobbleStone · 05-09-2022, 09:32 AM

Hi,

Two issues that have just arose on my '07 Z4 3.0si:

1. The auto up/down on the driver's power window is not functioning
2. The parking brake only goes up a few clicks but does not fully hold the car in place

Any ideas what to do for both issues?

Thanks

pungo · 05-09-2022, 10:23 AM

1)Relearn the window anti-trap setting.
2)Someone that didn't know to properly adjust the parking brake may have messed up the adjustments

CobbleStone · 05-09-2022, 10:50 AM

Thanks so much.

1. The relearn method worked! Window works perfectly.

2. For the handbrake, it doesn't even want to go beyond a few clicks, and when I pull it up further, there are no clicks at all, and just settles back to the previous position.

Steeler · 05-09-2022, 11:03 AM

Quote:

Originally Posted by CobbleStone

Thanks so much.

1. The relearn method worked! Window works perfectly.

2. For the handbrake, it doesn't even want to go beyond a few clicks, and when I pull it up further, there are no clicks at all, and just settles back to the previous position.

Handbrake sounds like corroded cable. Frozen in the sheath.

CobbleStone · 05-09-2022, 11:32 AM

Could it be that something is wrong with the mechanical part of the handbrake lever itself (maybe the handbrake ratchet is worn)?

If this is the problem and I don't change the handle assembly (as they are quite expensive), would there be a way to adjust the cable to compensate for the limited travel of the lever?

pungo · 05-09-2022, 04:35 PM

It's common for the teeth to strip out on these. I always press the button in when setting the parking brake to reduce the wear on the teeth. The brake should hold at ~5 clicks, if it gets to 10 some adjustment is required. Adjustment is made at the rear drum, then the cables, following a specific adjustment procedure.

I would not try to compensate by adjusting it tighter due to a bad ratcheting system since you could end up with brake drag and overheat them while driving.

Check out the teeth on the ratchet, if worn out, you may be able to use a chisel with the proper shape to redefine the worn teeth shape

05-09-2022, 09:32 AM	#1
CobbleStone New Member 2 Rep 11 Posts Drives: 2007 BMW Z4 Join Date: May 2021 Location: Montreal, Canada iTrader: (0)	Few issues Hi, Two issues that have just arose on my '07 Z4 3.0si: 1. The auto up/down on the driver's power window is not functioning 2. The parking brake only goes up a few clicks but does not fully hold the car in place Any ideas what to do for both issues? Thanks
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05-09-2022, 10:23 AM	#2
pungo Colonel 880 Rep 2,547 Posts Drives: Z4MC-X3-35i-525i, Corrado G60 Join Date: Nov 2007 Location: MD iTrader: (5) Garage List 2011 BMW X3 x35i [0.00] 2001 BMW 525i [0.00] 2007 BMW Z4 M Coupe [8.76]	1)Relearn the window anti-trap setting. 2)Someone that didn't know to properly adjust the parking brake may have messed up the adjustments
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05-09-2022, 10:50 AM	#3
CobbleStone New Member 2 Rep 11 Posts Drives: 2007 BMW Z4 Join Date: May 2021 Location: Montreal, Canada iTrader: (0)	Thanks so much. 1. The relearn method worked! Window works perfectly. 2. For the handbrake, it doesn't even want to go beyond a few clicks, and when I pull it up further, there are no clicks at all, and just settles back to the previous position.
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05-09-2022, 11:32 AM	#5
CobbleStone New Member 2 Rep 11 Posts Drives: 2007 BMW Z4 Join Date: May 2021 Location: Montreal, Canada iTrader: (0)	Could it be that something is wrong with the mechanical part of the handbrake lever itself (maybe the handbrake ratchet is worn)? If this is the problem and I don't change the handle assembly (as they are quite expensive), would there be a way to adjust the cable to compensate for the limited travel of the lever? Last edited by CobbleStone; 05-09-2022 at 11:52 AM..
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05-09-2022, 04:35 PM	#6
pungo Colonel 880 Rep 2,547 Posts Drives: Z4MC-X3-35i-525i, Corrado G60 Join Date: Nov 2007 Location: MD iTrader: (5) Garage List 2011 BMW X3 x35i [0.00] 2001 BMW 525i [0.00] 2007 BMW Z4 M Coupe [8.76]	It's common for the teeth to strip out on these. I always press the button in when setting the parking brake to reduce the wear on the teeth. The brake should hold at ~5 clicks, if it gets to 10 some adjustment is required. Adjustment is made at the rear drum, then the cables, following a specific adjustment procedure. I would not try to compensate by adjusting it tighter due to a bad ratcheting system since you could end up with brake drag and overheat them while driving. Check out the teeth on the ratchet, if worn out, you may be able to use a chisel with the proper shape to redefine the worn teeth shape
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