Mercedes-Benz ML350 Operator's Manual page 443

Practical hints
Replacing SmartKey batteries
Pull out batteries 3.
Using a line-free cloth, insert new
batteries 3 with the plus (+) side fac-
ing up underneath the contact
spring 4.
Return battery compartment 2 into
housing until it locks into place.
Slide mechanical key 1 back into the
SmartKey.
Check the operation of the SmartKey
and the KEYLESS-GO*.
442