Complete kit for retrofitting the original tire pressure monitoring system (TPMS) of the Audi A8 4N Representation of the air pressure and temperature of the individual wheels on the MMI display Gradual pressure loss of all four tires is also detected, which allows an increase in rolling resistance and thus an increase in fuel consumption to be prevented in good time. Scope of delivery: control part holder cable set 4 wheel sensors coding dongle (diagnostic interface) Note: radio frequency 433 MHz Wheel sensors must be inserted into the rims by a tire service