I had 12 months of misery in my '93 500SL with the ASR cutting in randomly on 50 % of my journeys . A forum letter highlighted that I had not reset the wheel sensors after a battery change. So I 'reset' the wheel sensors by holding the steering on full lock for a few seconds on either side. Result >>> perfection!! > the last 2 months of journeys have gone like a dream >> no more Limp Home Mode !!! Worth a try?? Good luck. regards philespana.