How To Open Mercedes Key Fob 2008. Push and hold the trip computer button on the left stalk, while holding the button turn the ignition on and off several times untill you hear a confirmation tone from the glovebox area, when the tone is heard, release the button and remove the key from the ignition, immediately after push any button on the key fob. Locked the 2008 gl 450 with key fob.
The valet key must be cut by a qualified automotive locksmith to match your vehicle's ignition. We strongly recommend using a lithium battery like these ones, as they last much longer. If the key fob appears to be working, see if the remote is transmitting a signal.
(ignition switch) this uses power in the car to energize the key ir circuits, so no batteries are required in the key to.
There are several mercedes smart key remotes so make sure to look at the correct video. Then, pull the blade key away from the door. Move the valet key to the opposite side of where it can be fully inserted, then push down. It can only lock /unlock from the driver side very close to the dor handle.