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Mercedes A-Klasse Limousine 2022 Manual

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Requirements
RYou require a CR 2032 3 V cell battery.
Mercedes-Benz recommends that you have the
battery replaced at a qualied specialist work-
shop.
#Remove the emergency key (/ page 78).
#Press release knob 2 down fully and slide
cover 1 in the direction of the arrow.
#Fold out cover 1 in the direction of the arrow
and remove.
#Remove battery compartment 3 and take
out the discharged battery.
#Insert the new battery into battery compart-
ment 3. Observe the positive pole marking in
the battery compartment and on the battery
when doing this.
#Push in battery compartment 3.
#Re-attach cover 1 and push it until it
engages.
Problems with the key, troubleshooting
You can no longer lock or unlock the vehicle
Possible causes:
RThe key battery is weak or discharged.
#Check the battery using the indicator lamp
(/ page 76).
#Replace the key battery, if necessary
(/ page 78).
#Use the replacement key.
#Use the emergency key to lock or unlock
(/ page 83).
#Have key checked at a qualied specialist
workshop.
There is interference from a powerful radio signal
source
Possible causes if the function of the key is
impaired:
Rhigh voltage power lines
Rmobile phones
Relectronic devices (notebooks, tablets)
Rshielding due to metal objects or induction
loops for electrical gate systems or automatic
barriers
#Make sure that there is sucient distance
between the key and the potential source of
interference.
You have lost a key
#Have the key deactivated at a qualied spe-
cialist workshop.
#If necessary, have the mechanical lock
replaced as well.
Opening and closing 79
… 82 …


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Mercedes A-Klasse Limousine 2022 User Manual - German - 553 pages

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