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Replacing the battery in the remote control key
The battery in the remote control key needs to be replaced when it has become discharged.
The electrical system is single-pole and uses the chassis and engine casing as a conductor.The starter battery is used to start up the electrical system and drive the starter motor as well as other electrical equipment in the car.The starter battery should be replaced by a workshop* .
Cars with the Start/stop function are equipped with two 12 V batteries - one extra powerful starter battery for starting and one support battery that helps during the function's starting sequence.