Problems with the key, Opening and closing – Mercedes-Benz 2013 C Class Coupe User Manual

Page 89

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Problems with the key

Problem

Possible causes/consequences and M Solutions

You cannot lock or
unlock the vehicle
using the key.

The key battery is discharged or nearly discharged.

X

Try again to lock/unlock the vehicle using the remote control
function of the key. Point the tip of the key at the driver's door
handle from close range and press the % / & button.

If this does not work:

X

Check the key battery (

Y

page 85) and replace it if necessary

(

Y

page 85).

X

Lock (

Y

page 90) or unlock (

Y

page 91) the vehicle using

the emergency key element.

The key is faulty.

X

Lock (

Y

page 90) or unlock (

Y

page 91) the vehicle using

the emergency key element.

X

Have the key checked at a qualified specialist workshop.

You can no longer lock
or unlock the vehicle
using KEYLESS-GO.

There is interference from a powerful source of radio waves.

X

Lock/unlock the vehicle using the remote control function of
the key. Point the tip of the key at the driver's door handle from
close range and press the % / & button.

There is a fault with KEYLESS-GO.

X

Lock/unlock the vehicle using the remote control function of
the key. Point the tip of the key at the driver's door handle from
close range and press the % / & button.

X

Have KEYLESS-GO checked at a qualified specialist workshop.

If this does not work:

X

Check the key battery (

Y

page 85) and replace it if necessary

(

Y

page 85).

X

Lock (

Y

page 90) or unlock (

Y

page 91) the vehicle using

the emergency key element.

You have lost a key.

X

Have the key deactivated at a qualified specialist workshop.

X

Report the loss immediately to the vehicle insurers.

X

If necessary, have the locks changed as well.

You have lost the emer-
gency key element.

X

Report the loss immediately to the vehicle insurers.

X

If necessary, have the locks changed as well.

Key

87

Opening and closing

Z

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