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Intermittent ABS/DSC Fault

Discuss problems you have had or are having with your Z4
harrycodlife
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Intermittent ABS/DSC Fault

Post by harrycodlife » Tue Nov 07, 2017 4:52 pm

Hi Everyone - 58 Reg BMW Z4 3.0si Sport Coupe E86 - About 65000 miles on the clock - Driving home the other day - Just before I got home the ABS and DSC warning lights pinged on the dashboard - First time I have seen that - Local garage says issue is intermittent fault with the pump according to their diagnostics - In fact on the way to the garage the lights went out - I don't have the fault codes yet unfortunately - Would really appreciate some advice on whether I should fork out for a new pump, have this pump repaired or buy a second hand pump - I don't have the skills to fit a new pump myself unfortunately - If you can point me in the direction of a good garage I would really appreciate that too - Many Thanks.

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Intermittent ABS/DSC Fault

Post by Monkeydonkeyratmagic » Tue Nov 07, 2017 4:54 pm

I believe according to a recent thread Mike can repair an ABS unit, may be wrong. They are like £400 for another one so a repair would be the wiser option if it can be done.
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Ducklakeview
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Intermittent ABS/DSC Fault

Post by Ducklakeview » Tue Nov 07, 2017 5:04 pm

Monkeydonkeyratmagic wrote: Tue Nov 07, 2017 4:54 pm I believe according to a recent thread Mike can repair an ABS unit, may be wrong. They are like £400 for another one so a repair would be the wiser option if it can be done.
Yup, I can sort that for you, takes about 2 hours all in..

Mike

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MACK
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Intermittent ABS/DSC Fault

Post by MACK » Tue Nov 07, 2017 5:07 pm

before you do anything get the codes to ensure its not one of the pressure sensors. they fail more than the pumps and are an dead easy fix as long as you've got a 27mm spanner!
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ph001
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Intermittent ABS/DSC Fault

Post by ph001 » Tue Nov 07, 2017 5:09 pm

It's more than likely just the carbon brushes sticking on the ABS pump / motor. Fairly easy DIY if you got the guts and the spanners, otherwise Ducklakeview on here will sort it for less than somewhere like ECUtesting.com
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Intermittent ABS/DSC Fault

Post by Ducklakeview » Tue Nov 07, 2017 5:17 pm

MACK wrote: Tue Nov 07, 2017 5:07 pm before you do anything get the codes to ensure its not one of the pressure sensors. they fail more than the pumps and are an dead easy fix as long as you've got a 27mm spanner!
If the codes are 5DF0 and 5DF1 it's the pump, which I can fix for you.

Mike

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Intermittent ABS/DSC Fault

Post by harrycodlife » Tue Nov 07, 2017 5:30 pm

Thanks Guys - I will try and get the fault codes and come back to you - Cheers.

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Intermittent ABS/DSC Fault

Post by harrycodlife » Tue Nov 07, 2017 6:28 pm

Hi Guys - I can confirm the fault codes - 5DF0 - Hydraulic Pump Intermittent - 5DF1 - Hydraulic Unit Pump Motor Connection Faulty Intermittent - Sounds like a repair job? - Would I need to have the pump removed and post it up or drive the vehicle up etc - Many Thanks.

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Intermittent ABS/DSC Fault

Post by harrycodlife » Tue Nov 07, 2017 6:34 pm

For further info - The garage also asked if I use it much because if not and it is standing in a garage for any length of time the valves or a valve within the pump can stick if not used - In fact I don't drive the car to work as I work very locally and just use it on holidays and to drive to the races occasionally so it can sit in the garage for a couple of weeks at a time (I know, sacrilege). Cheers.

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Intermittent ABS/DSC Fault

Post by Ducklakeview » Tue Nov 07, 2017 6:39 pm

harrycodlife wrote: Tue Nov 07, 2017 6:34 pm For further info - The garage also asked if I use it much because if not and it is standing in a garage for any length of time the valves or a valve within the pump can stick if not used - In fact I don't drive the car to work as I work very locally and just use it on holidays and to drive to the races occasionally so it can sit in the garage for a couple of weeks at a time (I know, sacrilege). Cheers.
It's not normally the valves that stick, as they sit covered in brake fluid. The brushes on the motor are the normal culprit, and this will be shown with the codes. It may also say "hydraulic pump motor connector faulty" and "hydraulic pump no signal"

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Intermittent ABS/DSC Fault

Post by harrycodlife » Tue Nov 07, 2017 6:45 pm

Thanks Mike - How do we go about arranging a repair for the pump - Many Thanks.

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Intermittent ABS/DSC Fault

Post by Ducklakeview » Tue Nov 07, 2017 7:04 pm

harrycodlife wrote: Tue Nov 07, 2017 6:45 pm Thanks Mike - How do we go about arranging a repair for the pump - Many Thanks.
You can either come to me in the car (preferred, as you'll see it done and working) or send me the pump?

Mike

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Intermittent ABS/DSC Fault

Post by harrycodlife » Tue Nov 07, 2017 7:12 pm

Ok Mike - I can drive up one weekend - If you could PM when and where to go and a rough estimate etc - Many Thanks

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ph001
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Intermittent ABS/DSC Fault

Post by ph001 » Tue Nov 07, 2017 7:13 pm

Codes are the surefire way but typically:

1) DSC + ABS = ABS pump.
2) DSC + handbrake (in yellow) = pressure sensor
3) DSC + ABS + handbrake (in red) = wheel speed sensor.
4) DSC + ABS + handbrake (in yellow) + tyre pressure = wheel speed sensor.
5) DSC + ABS + handbrake (in yellow) = steering angle sensor fault / ABS pump.
6) DSC permanently on = steering angle sensor calibration issue / yaw sensor / lat accel sensor.

There are other combinations of faulty sensors which can cause similar lights but the above are the common ones.
Last edited by ph001 on Tue Nov 07, 2017 9:36 pm, edited 4 times in total.
2007 E85 Z4 3.0Si manual :driving:
19" CSL's | Eibach Springs | Aeroskirts | Z4M front bumper | Clear brake light | ZHP | RCH+| Stubby

2004 E46 M3 coupe manual - gone but not forgotten.

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Ducklakeview
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Intermittent ABS/DSC Fault

Post by Ducklakeview » Tue Nov 07, 2017 7:34 pm

harrycodlife wrote: Tue Nov 07, 2017 7:12 pm Ok Mike - I can drive up one weekend - If you could PM when and where to go and a rough estimate etc - Many Thanks
You seem to have PM's/Email disabled? Drop me an email to [email protected]

Mike

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