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BMW EPS (Electronic Power Steering) Fault Information

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HI guys!

I just would like to share something about EPS.
This second time happened, so I would give some advise...
The story is: customer (other garage) come to me for diagnose F series BMW, to find out what is wrong with the EPS. I said, have to replace as it has internal fault, so no way to fix it, and I said when it's done come back to me for coding...
I said also, change it all together (with complete steering rack).
2 weeks later come back, and when I did the first step (before I try to coding), and it started working (light gone), come very strange noise...
Then I asked what you did, how changed it? They said we just changed the motor (I call it "power-pack")... headbang

So, NO WAY shake to change it, because inside the rack they use tooth-belt drive.
This belt tension in factory on special test bench!!!
So if the belt is too loose, it will jump and damage the teeth and very noisy, if it too tight damage the bearing and short life...
So 2 different customer just f****d up 2 perfect second hand EPS, because they just was lazy... headbang

In attachment you can see inside of EPS...
EPS_belt drive_BMW.zip
File Type: .zip
Downloaded: 5 times
Size: 101.78 KB


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