This sounds like it might be related to the problem I am having. I picked up my '93 500E Friday after having new tires installed & an alignment done. They had run down the battery so they had to jump the car to get it started. The ABS & ASR light have been on since I picked it up. I am guessing the ABS problem has caused the ASR to cease functioning since they work together. I am going to check the box you mentioned if I can find it. My battery is in the trunk but I am sure the box you mentioned is still under the hood. Any other ideas?