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E63 / E64 6 Series (2003 - 2013)
The E63/E64 BMW 6 Series builds on BMW's sporty heritage with aggressive lines and an incredible motor to back the design up. Available in coupe and convertible trims with a standard 4.8 liter engine producing 360 horsepower and 360 lb-ft of torque, the 6-series is a popular choice that exceeds expectations.

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  #1  
Old 08-07-2014, 09:54 AM
mrigor mrigor is offline
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Another Active Steering error

04 645ci, I do not drive it often.


I had my battery die on me with age, replaced with a new battery but the active steering error does not go away. I tried to reset it with OBD and with the turning steering wheel steps. Nothing helps.

There is good level of oil.

What else can I check?


*The only thing I did was replace the brake line while battery was dead*
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  #2  
Old 08-07-2014, 02:03 PM
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Yorgi Yorgi is offline
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I would get the codes read to see what other details those will show you. A very common failure for this error is the steering angle sensor, which is a ring located in the steering column - sometimes it's just dirty and needs to be cleaned.

Another popular problem is a bad battery or a bad voltage regulator. If the regulator goes bad the fluctuating voltage can trigger the error.
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  #3  
Old 08-07-2014, 02:11 PM
sentrex sentrex is offline
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i went camping last week and my wife drained the battery by opening the top without starting the car and leaving doors open,so i had the car boosted and for maybe 5 min i had the active steering error in dash but it went away when i turned the steering left and right all the way a couple of times
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  #4  
Old 08-15-2014, 05:15 PM
mrigor mrigor is offline
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Even if i reset them, the codes just stay. Fluid is on MAX

612C - Control unit: hardware fault
6140 - Redundancy comparison driver steering angle, top
6145 - no monitoring of angle sum relation
CE93 - Message (steering-wheel angle top, 0C80
CE99 - Unknow DTC code, please check service notebook

Last edited by mrigor; 08-15-2014 at 05:53 PM.
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  #5  
Old 08-15-2014, 07:15 PM
HerbP HerbP is offline
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As Yorgi stated, the steering angle sensor might be dirty? I would start there 1st since this would be the cheapest solution.
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  #6  
Old 08-15-2014, 08:39 PM
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roseng roseng is offline
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Quote:
Originally Posted by HerbP View Post
As Yorgi stated, the steering angle sensor might be dirty? I would start there 1st since this would be the cheapest solution.
What color is the fluid for the power steering? It should be a clear/green tinted fluid. Mind was very dirty at about 50K miles.

The dynamic drive shares the same fluid and I have seen some people with the error that changed the fluid and it cleared the error.

It's also an easy job. Make sure you use CHF11 and follow the guides.

Good luck.
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  #7  
Old 08-21-2014, 06:59 PM
mrigor mrigor is offline
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The the 645ci srs module looks totally different. The slip ring wont let me take out of the metal housing. Has anyone done this before on 645ci? and could share what i should do next?


Last edited by mrigor; 08-21-2014 at 07:56 PM.
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  #8  
Old 08-21-2014, 10:26 PM
mrigor mrigor is offline
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I took it all apart, it looks totally different. There was ring, with 2 contact brushes. I cleaned them both, It did not help my error code. My fluid is clear, and clean.

Anyone have other ideas what else can cause this?
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  #9  
Old 08-22-2014, 11:10 AM
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Yorgi Yorgi is offline
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I think you took apart the clockspring and not the steering angle sensor, which I think is behind the clockspring in that "plate" that the clockspring attaches to.

Once you remove the round clockspring unit, do you see a rotating ring inside that "plate"?

Clockspring is part#1 in the diagram, I believe the angle sensor is inside part #2.


I have not seen the 6er angle sensor myself but I think this is where it is located.
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Straight lines are for fast cars...turns are for fast drivers
'04 M3 - track
'06 650i Cab - daily driver
'02 Highlander - kid hauler
'01 330Ci - winter beater

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  #10  
Old 08-22-2014, 11:13 AM
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Yorgi Yorgi is offline
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Here is an eBay listing for an M6 angle sensor. If you scroll down to the series of pictures, you can see the separate clockspring (round unit) and the backing plate that has the angle sensor inside of it.

Does yours look like this once you have it apart? It should be the same.

eBay M6 Steering Angle Sensor
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Straight lines are for fast cars...turns are for fast drivers
'04 M3 - track
'06 650i Cab - daily driver
'02 Highlander - kid hauler
'01 330Ci - winter beater

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  #11  
Old 08-22-2014, 07:09 PM
mrigor mrigor is offline
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its a totally different design, then the DIY i saw. there is a bearing holding the back plate to metal housing. I took the slip ring off, its totally different then the newer models.
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  #12  
Old 08-25-2014, 08:24 PM
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Yorgi Yorgi is offline
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Quote:
Originally Posted by mrigor View Post
its a totally different design, then the DIY i saw. there is a bearing holding the back plate to metal housing. I took the slip ring off, its totally different then the newer models.
I was not talking about the DIY in my previous post.

These two pics from eBay show the clockspring (round unit) and the angle sensor (within the the backing plate that the clockspring attaches to).
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Straight lines are for fast cars...turns are for fast drivers
'04 M3 - track
'06 650i Cab - daily driver
'02 Highlander - kid hauler
'01 330Ci - winter beater

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