One problem related to speed control cable has been reported for the 1997 Mercedes Benz C Class. The most recently reported issues are listed below.
Was driving vehicle down the highway traveling at normal speeds. All of a sudden car began backfiring and speed dropped from 65 mph to 30 mph. The car would not accelerate and began to backfire more. Temp went up and car started smoking. Pulled over to check on car and it never restarted again. Contacted mb assist and was told I would need a jump with thick gauge cables and they could send a tech but the charges would be at minimum $100. Its been over a week and the car will not start. I've put batteries in fob (they never had any before) , charged car battery , checked all fuses, jumped car battery and now am being given a p1570 immobilizer code . The car alarm has never been activated. . This car is making absolute no sense with the errors and no explanation as to why it nearly caught fire and wont start now. . .