The battery powers the lock/unlock funtion using the buttons
The small glass transponder is the piece that communicates with the ring around the ignition to mobilise the vehicle
If the lock/unlock function is not working, then re-pairing the keyfob to the car is required. Easy.
If the transponder is not working and the key cannot start the car when inserted into the lock and turned, then the key may need to be re-paired with the immobiliser system, which is a Volvo-dealer job due to the security aspects.
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XC90 R-Design MY2009, Black Sapphire Metallic. HP-Sound, RSE, Nav, Tel, ParkingCam, BLIS, ParkingHeater, RestHeat, Removable Towbar, Summer: CRATUS 20x8 on Pirelli Scorpion Zeros 255/45, Winter: NEPTUNE 17x7 on Continental WinterContact 4x4 235/65.
Last edited by SwissXC90; Dec 6th, 2018 at 18:20.
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