BMW Z4 Power steering column – Common problem.

z4 power steering fault


This electric power steering column is a very common failure for the BMW Z4 built between 2003 and 2009. When the steering column motor fails then the steering will become very heavy and the power steering light will illuminate on the instrument cluster.


If you attempt to diagnose the steering fault then you will find that when you attempt to read fault codes or live data from the steering column, it will not communicate at all with the power steering system. If you have these symptoms, then there is a very good chance that you have the very common fault with your electric power steering column.




Common symptoms:

  • Complete power assisted steering failure.
  • Power steering light on.
  • Unable to communicate with the power steering system during diagnostic checks.


Affected vehicles:

  • BMW Z4 (E85/E86) 2003 – 2009, all variants.


Common failing part numbers:

VM No’s:

  • 780417712100
  • 780227713800
  • 01960AA2G1
  • 780227713800
  • 01961AC3R0
  • 01900AA2G1
  • 882401060515
  • 7804974134
  • 7804
  • 974 134

OEM No’s:

  • 0273010010
  • 6763764
  • 7804277110
  • 6762586AI01



We fully test all electric power steering columns under accurate driving conditions both before and after rebuilding your steering column on our purpose built HIL (Hardware In-the-Loop) test rig. This HIL rig is designed to fully simulate all vehicle signals and uses genuine force and load conditions to ensure your unit is functioning fully and as originally intended following the rebuild.



We rebuild these Z4 electric power steering columns for manufacturers, main dealers and BMW specialists all over the globe, so you can be assured of our extensive experience and quality of our work.



No need for any additional programming or coding once you receive your rebuilt steering unit back, just bolt on, plug in and away you go.



This steering rebuild comes with an unlimited mileage lifetime warranty*.


Price and product information: BMW Z4 Electric Power Steering Motor


How do I get my unit rebuilt?

Pay for the rebuild here: Get yours rebuilt

Print the payment/booking confirmation email.

Package the Z4 power steering motor inside a sturdy box with plenty of packaging material (make sure you include your confirmation email in the box).

Send us your package by tracked courier (the shipping instructions are on the confirmation email).

Once received we will test, rebuild and return your Z4 power steering unit with an unlimited mileage lifetime warranty. (if your unit turns out not to be faulty then we will refund your payment less a small testing fee and return shipping)


What if I don’t want to pay up front?

This is not a problem, if you prefer this option then follow the following steps:

Fill in and submit this test form.

Print the booking confirmation email.

Package the power steering ECU and motor inside a sturdy box with plenty of packaging material (make sure you include your confirmation email in the box).

Send us your package by tracked courier (the shipping instructions are on the confirmation email).

Once received, we will test your unit and call you to advise on the outcome of testing, if your power steering controller is faulty and you choose to go ahead with the rebuild then we will take payment over the phone using a debit/credit card.

We will then rebuild your Z4 power steering unit and return it to you with an unlimited mileage warranty.

If you require further information regarding this BMW Z4 power steering unit then please contact us.

BMW Products/Services









Alpina B3












Comments on "BMW Z4 Power steering column – Common problem."
KONSTANTINOS LOGOTHETIS says: 3/3/2021 2:40:28 PM
Hello Sirs, could you please inform me if is it possible to send you a BMW Z4 EPS motor from Athens-Greece in order to be repaired? Best regards
ECU Admin says: 5/3/2021 10:31:42 AM
Hi Konstantinos, we offer a full international service, you are more than welcome to send us your part for test and rebuild.
Suresh says: 6/5/2020 1:33:32 PM
Electric power steering column Would you have one on the selve as exchange unit Power steering not working power to Moyer ok
ECU Admin says: 6/5/2020 5:22:58 PM
Hi Suresh, please select your part number from the following list to see all current available options:
John Ling says: 4/5/2020 10:25:38 PM
Just NOT fun to drive
Leave a Comment All fields are required*