W-425 · Elektro
Remote Key Battery Renewal
Prise the transmitter off the key blade, split the case, CR2032 positive side down, screw the board back.
Open The Fob
Flat screwdriver under the transmitter, prise it off the key body. Split the two halves of the transmitter case. Undo the screw and lift the printed circuit board carefully.
Cell
Lift the old battery out. Fit a new CR2032 with the positive (+) face downwards. Board back, screw tight, case halves together, transmitter clipped onto the key body again. Test lock and unlock at a short range before you walk away from the car.