Changing the remote control's battery (stationary heater)
DANGER Risk of death due to swallowing batteries
Batteries contain toxic and corrosive substances. If batteries are swallowed or otherwise enter the body, severe internal burns may occur within two hours.
There is a risk of fatal injury!
Keep batteries out of the reach of children.
If the battery cover does not close securely, do not use the remote control any longer and keep out of the reach of children.
If batteries are swallowed or otherwise enter the body, seek medical attention immediately.
ENVIRONMENTAL NOTE Environmental damage due to improper disposal of batteries
Batteries contain toxic and corrosive substances.
Take discharged batteries to a qualified specialist workshop or to a collection point for used batteries. Requirements:
A CR2450 lithium battery is available.
Mercedes-Benz recommends that you have the battery changed at a qualified specialist workshop.
Push a pointed object into recess 
.
. Slide battery cover 
backwards in the direction of the arrow.
backwards in the direction of the arrow. Insert new battery 
with the lettering facing upwards.
with the lettering facing upwards. Slide battery cover onto the remote control in the opposite direction to the arrow until the battery cover engages.
onto the remote control in the opposite direction to the arrow until the battery cover engages.