Malfunction - Mercedes-Benz S-Class Owner's Manual

Practical advice
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Troubleshooting
KEYLESS GO*
Problem
You cannot lock or unlock the vehicle us-
ing the KEYLESS GO key.
442
Possible cause/consequence
The KEYLESS GO key batteries are nearly
discharged or fully discharged.
There is a malfunction with KEYLESS GO.
Nur fuer internen Gebrauch
Suggested solutions
Lock or unlock the vehicle using the re-
mote control function on the KEYLESS
GO key. Point the tip of the key at the
driver's door handle at close range and
try to open the vehicle again.
If this does not work:
Unlock or lock the vehicle using the
emergency key element ( page 447).
Check the KEYLESS GO key batteries
and change them if necessary
( page 451).
Check the KEYLESS GO key batteries
and change them if necessary
( page 451).
Have the KEYLESS GO key checked at a
qualified specialist workshop.