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Discussion Starter #1 (Edited)
The cruise control on my car will not work if the car speed goes more than 90 mph; after that, no cruise control working on that car until the key is turn off and on again. Then, the cruise will work but if the car is accelerated using the cruise, il will go off at about 90 mph. The dealer does not understand the problem and changed the brake pedal switch without any cure. Maybe here a good and experience mbtech will be of some help.
 

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Discussion Starter #2
Further investigations shows that rust on wheel hubs causes swelling and sensor ring defects at some higher speeds. The cure would be to change all wheel hubs...
 

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How did you find this out? Is there an ESP/BAS warning when you drive more than 90 mph? Are your tires all the same size and have an even amount of tread?
 
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