Mercedes-Benz SLK350 Operator's Manual page 241

Warning and indicator lamps in the instrument cluster
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approximately one minute and then remain continuously illuminated. This sequence will be
repeated every time the vehicle is started as long as the malfunction exists. When the malfunction
indicator is illuminated, the system may not be able to detect or signal low tire pressure as
intended.
TPMS malfunctions may occur for a variety of reasons, including the installation of incompatible
replacement or alternate tires or wheels on the vehicle that prevent the TPMS from functioning
properly. Always check the TPMS malfunction telltale after replacing one or more tires or wheels
on your vehicle to ensure that the replacement or alternate tires and wheels allow the TPMS to
continue to function properly.
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