Batteries for the main key (folding) with radio wave remote control, removing and installing: Installing

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Note the polarity and correct position when installing the batteries.

Fig 1: Identifying Positive Terminal (Foldable Key)

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Place the battery with the positive terminal downwards into the sensor unit (positive terminal is marked on housing).
Engage battery in transmitter body by pressing down lightly.
Install cover on transmitter body (do not damage seal).
Then engage the transmitter unit with the main key.