Mercedes Benz 2009 M-Class User Manual

If the engine does not start as described, 
carry out the following steps:

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If you are starting the engine with the 
SmartKey, turn SmartKey in starter 
switch to position 0 and repeat starting 
procedure.

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If you are starting the engine with 
KEYLESS-GO*: Close any doors that 
may be open to allow for better 
detection of the SmartKey with 
KEYLESS-GO*.

Or:

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Remove KEYLESS-GO* start/stop 
button from starter switch (

컄

page 41).

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Start the engine with the SmartKey as 
radio signals from another source may 
be interfering with the SmartKey with 
KEYLESS-GO*.

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Repeat the starting procedure 
(

컄

page 54). Remember that extended 

starting attempts can drain the battery.

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Get a jump start (

컄

page 515).

If the engine does not start after several 
starting attempts, there could be a mal-
function in the engine electronics or in the 
fuel supply system.

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Notify an authorized Mercedes-Benz 
Light Truck Center.

1 Parking brake pedal
2 Release handle

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Release the parking brake by pulling on 
release handle

2.

The warning lamp

; (USA only) 

or

3 (Canada only) in the 

instrument cluster goes out.

G

When leaving the vehicle, always remove the 

SmartKey or SmartKey with KEYLESS-GO* 

from the starter switch, take it with you and 

lock the vehicle. Do not leave children unat-

tended in the vehicle, or with access to an 

unlocked vehicle. Children could release the 

parking brake, which could result in an acci-

dent and/or serious injury.