W211 Key fob/central locking issue

Nevakonaza

New Member
Joined
Apr 8, 2017
Messages
1
Car
2005 E320 Sport
Hey guys,

All of a sudden the Central locking/open boot etc is not working.

What we have tried.

  • Replacing batterys in key fob - No joy.
  • Re-sync of key fob - turn key to position two, pull it out, within 10 seconds hold down the lock buttom and press the unlock button 5 times quick while still holding hte lock button. It shoudl resync right then. - Again no joy.
  • Tried the secondry key fob - no joy
  • Replace the 7.5 fuse in the boot (The fuse that was in was blown) but we changed it with a new one but still no joy.

Really do not want to take it into mercades,Its starting to cost alot of money this car it was on the computer just last week before this key fob issue happened.

any suggestions appreciated. :)
 

Dec

MB Enthusiast
Joined
Jul 28, 2004
Messages
4,475
Car
C180,A.
What does the 7.5 fuse protect?
Is your car alarm working properly?

Dec
 

nimbusgb

Member
Joined
Apr 10, 2013
Messages
38
Location
East Sussex
Car
SLK 55 AMG & ML 320 s CDi
Antenna amplifier module.

Sodding thing has the receiver and digitizer for the RF remote built in to it, passes digital signal to SAM module that decodes it and checks with ECU if it can unlock.

Just been through the same pain on my SLK.
 

David404

Active Member
Joined
Sep 7, 2015
Messages
759
Location
West Midlands
Car
GLE350d (W166)

Dord1954

Active Member
SUPPORTER
Joined
Jul 8, 2015
Messages
74
Location
Shropshire
Car
CLS 320 CDI
I had this issue recently and fuse number 8 in the boot compartment had blown and the reason it had blown was a faulty alarm siren which runs off the same fuse so maybe check the fuse and if blown try disconnecting the siren located behind the front nearside wheel arch then replace the fuse to see if it works. a link to show how to get to the siren

Mercedes W211 E Class W219 CLS Alarm Siren Replacement ? infinity squared
 

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