The battery in the keyless remote of a 1999 Mercedes E320 is changed by prying off the back cover and lifting the battery out. The battery will typically last 2 years or more under normal use.
Take it in to a mechanic....the battery is hard. It will take like 3 hours, like disassembling a rubiks cube.
Open it up and see what battery it takes.
Yes
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You need a new door lock actuator
To change the battery in your 1999 Mercedes-Benz E320 keyless remote, first, locate the small slot or notch along the edge of the remote. Use a flat tool, like a small screwdriver, to gently pry open the remote casing. Once open, remove the old battery, noting its orientation, and replace it with a new CR2025 or CR2032 battery. Finally, snap the remote back together and test it to ensure it works properly.
under the batter box. remove the battery the tray and you will find it under there
How do you check the transmission fluid level on 1999 jetta GLS?
cant open the case to get to the dead batteries. How do I open the case
Yes
press on your remote the lock button 5 times at 2 sec intervals in order to synchronize your transmitter.