SL55/63/65/R230 AMG: Dont't forget key warning-how do you stop it?
My 2004 SL55 keyless go system stops sounding after approx. 3-5 minutes
with the drivers doar still open.
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Was impressed to see a message on the dash saying "Keycard battery low" or some such. The card is apparently able to tell the car that its battery is low, because without it, of course, you cannot get into the car or drive. Still think it's a good idea to replace all these button cells once a year. With 4 cars, that a total of 28 batteries for me! Gets expensive...
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