bmw e90 steering angle sensor calibration inpa

Slowly lift up to expose the three ribbon cables underneath. Remove the 3 torx screws on the pc board. Leave the back side alone as it is etched with the encoder information, pic #12.ġ4.ĝefinitely do this at your very own risk. This was not the problem but I clean it off with meguiars #10 clear plastic polish. The optical disc on the face side looked like it was coated with a protective coating that deteriorated to form some crystal like stuff. Then remove the optical disc by squeezing the tabs on the back and slowly pulling the disc off the assembly. Remove the IR LED cover using a t6 torx driver. Now you should see the optical disc, pic #11.ġ3. Remove the SAS sensor housing cover, slowly working the tabs free. Note the indexing marks to the left of the unit, pic #10. Put the assembly on an anti-static pad and attach yourself to an anti static strap. Don’t remove the clock spring cover tabs.ġ2. It will lift off as a whole assembly, pic #9. Remove the clock spring assembly 2 tabs on the top and bottom and a tab release near the bottom of the connector. WTF I thought this was a $0.02 fix? Just kidding on the BMW dealership thing….ġ1. With the switch unit steering column assembly removed pay a BMW dealership a crap load of money for a new one ($573.14 or more) and then pay more money to them to reprogramming the module. Remove the two connectors from the back one is a tab release the other a lever release.ġ0. Remove the 4 torx bolts that hold the switch assembly that houses the infamous SAS pic#9. Remove the lower cowling and lift the upper one out of the way, pic#9.ĩ. Carefully pry the inside and outside of the cowling split to release the circular tabs, pic#8. Now comes the hard part, splitting the steering wheel cowling. Remove steering wheel, note the index marks at the bottom, pic#7.Ĩ. Using a small screwdriver release both tab releases, they are on top of the connector, pic#6.Ħ.

Remove the two connectors near the top of the steering wheel. Feel for the spring and push to release the springs, pic#3 & #4.Ĥ.Ĝarefully pry connector tabs and pull upward to release locks and remove airbag connector’s, pic#5.ĥ. On each side of the steering wheel at 4 & 7 o’clock position there are small slits on the surface, put a straight torx driver or allen key into. Use this at your own risk as I guarantee nothing.Ģ.ĝisconnect negative terminal on battery (in the trunk) and wait 10 minutes or so to let all caps discharge.ģ. PC type electronic component repair skills very helpful. Be very carefully as many components are small and fragile. The stealership, opps I meant dealership quoted me $1101.00 to RR the SAS including programming (what a deal huh?). Using all that info I was able to piece together how to attack my wife’s dreaded DSC faults on her 328i. My $0.02 DIY Steering Angle Sensor (SAS) Repairįirst, thanks to all who posted on their SAS problems and pics.

Bmw e90 steering angle sensor calibration inpa