Tire Pressure Control Reactivate
02-20-2006, 11:51 PM
#1
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Tire Pressure Control Reactivate
How can I reset the Tire Pressure Malfunction? The pressure is 29PSI Front and 32PSI Rear but every time I start the car I get the Tire Pressure Control Reactivate message.
02-21-2006, 08:06 AM
#2
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I have been through this and this it what works on my 2004 S500. Set all 4 tires to 32 PSI. Turn on the key. When asked to re-activate..proceed with pushing the button. Start the car and drive around enough to get the computer to adjust to the new setting. It usually takes me a few miles. The monitor readings will eventually read correctly. After you return home...allow the tires to cool then, using a good digital gauge, bring the pressures to your liking. The next time you drive you will notice the sensors will adjust to your new settings. I have adjusted pressures while the tires are warm but you are guessing because the spec calls for cold starting pressure. I know this sounds wierd but it works. If you go to the dealer they will charge you $50!! 
