Tunnel detection (models with the rain sensor* only)
For models without automatic low beams, tunnel detection activates the low beams when the vehicle enters a tunnel. The low beams are switched off approx. 20 seconds after the vehicle leaves the tunnel.
The rain sensor reacts to the change in lighting conditions when, for example, the vehicle enters a tunnel and the tunnel detection feature will then activate the low beam headlights. The low beams will be switched off approx. 20 seconds after the vehicle leaves the tunnel.
The rain sensor does not have to be activated for tunnel detection to function.