Key
Problem
Possible causes/consequences and
X
X
Solutions
You cannot lock or
unlock the vehicle
using the key.
The key batteries are discharged or nearly discharged.
X
Point the tip of the key at the driver's door handle from close
range and try to unlock or lock the vehicle again.
If this does not work:
X
Lock or unlock the vehicle using the emergency key element
(
Y
page 213).
X
Check the key batteries (
Y
page 216) and replace them if nec-
essary (
Y
page 216).
The key is faulty.
X
Lock or unlock the vehicle using the emergency key element
(
Y
page 213).
X
Have the key checked at a qualified specialist workshop.
The battery charge indi-
cator lamp of the key
does not go on during
the test.
The key batteries are discharged.
X
Change the batteries (
Y
page 216).
You have lost a key.
X
Have the key cancelled at a Mercedes-Benz Service Centre.
X
Report the loss immediately to the vehicle insurers.
X
If necessary, have the manual locks changed too.
You have lost the emer-
gency key element.
X
Report the loss immediately to the vehicle insurers.
X
If necessary, have the manual locks changed too.
The engine cannot be
started using the key.
The on-board voltage is too low.
X
Switch off non-essential consumers, e.g. seat heating* or inte-
rior lighting, and try to start the engine again.
If this does not work:
X
Check the starter battery and charge it if necessary
(
Y
page 232).
or
X
Jump-start the vehicle (
Y
page 234).
or
X
Consult a qualified specialist workshop.
212
Troubleshooting
Pr
act
ical
ad
vice
* optional
X204_AKB; 1; 5, en-GB
wobuchh,
Version: 2.11.4
2008-10-15T13:20:56+02:00 - Seite 212
Dateiname: 6515_0671_02_buchblock.pdf;
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