How alarm can get disabled on e-class?

maxima

Active Member
Joined
Mar 6, 2005
Messages
164
Location
London
Car
W211
I have this car since 2005. it is W211. I never had this problem before. I went to local shop and when i wanted to set the alarm - nothing happened. i tried few times. when i pressed 'open' button - it flashed once. however 'close' didnt work at all...

once i came back home it worked as usual.

can it be some strong radio signal interference around that particular place which was screwing the keyfob?

(need to note that i even sat inside the car and tried to set the alarm from inside - hoping it will reduce interference somehow).
 

grumpyoldgit

MB Enthusiast
Joined
May 7, 2012
Messages
2,603
Location
Stourbridge
Car
C270CDI Avantgarde SE
Have you checked the batteries in the fob?
 

BlackC55

Authorised Forum Sponsor
SUPPORTER
Joined
Feb 8, 2007
Messages
19,727
Location
Portsmouth, Hampshire.
Car
E55K SL500 E300Hybrid E250X3 Viano C55 E450Cab A180 Smart 44 Brabus
Radio interferance can cause this type of fault.

As above, check key batteries. Try using the spare key for a while and see if you have the same issue.
 
OP
OP
M

maxima

Active Member
Joined
Mar 6, 2005
Messages
164
Location
London
Car
W211
is nothing wrong with the batteries. as i said - close button worked - it uses the same battery right

also I went home 20 min later - and all button was working..
 

renault12ts

MB Club Veteran
Joined
Mar 5, 2009
Messages
16,394
Car
2005 W215 CL500.
is nothing wrong with the batteries. as i said - close button worked - it uses the same battery right

also I went home 20 min later - and all button was working..

Don't be so quick to dismiss the advice above. Just because it locks the car does not mean the battery is fine.
 

sinewave

MB Enthusiast
Joined
Jan 29, 2012
Messages
1,495
Location
Cheshire
Car
BMW 520 M-Sport Touring, Kawasaki ZX10R KRT (AMG Eater!)
Didn't you spot the Oiks parked up close by with the Radio Jammer and reader who remotely jammed and code read your Key Fob for future stealing to order?


No??


Oh well, keep an eye out tonight! :eek:
 

Dieselman

Banned
Joined
Jul 13, 2003
Messages
34,206
Car
Peugeot 403 Convertible
If the car thinks a door isn't shut it won't arm the alarm or operate the central locking.

Just a thought.
 
OP
OP
M

maxima

Active Member
Joined
Mar 6, 2005
Messages
164
Location
London
Car
W211
Didn't you spot the Oiks parked up close by with the Radio Jammer and reader who remotely jammed and code read your Key Fob for future stealing to order?
something like that crossed my mind (this is why I actually went here to ask). it was few teenagers around on the feet. Sudanese asylum seekers. but they went away soon and the alarm still didn't work..

however could you please tell - why would they need to jam in order to read the code? do you have a link to an article which can explain this technology in better details?
 

Dieselman

Banned
Joined
Jul 13, 2003
Messages
34,206
Car
Peugeot 403 Convertible
They jam the radio code so the car doesn't lock. Most people don't notice.

As it worked for unlock, I doubt it's jamming.
 
OP
OP
M

maxima

Active Member
Joined
Mar 6, 2005
Messages
164
Location
London
Car
W211
we'll see. if it is not stolen in a month then it was probably nothing.
 

Dieselman

Banned
Joined
Jul 13, 2003
Messages
34,206
Car
Peugeot 403 Convertible
There is no scanning going on here and almost certainly no jamming either.

Even if the RF code was scanned, the car couldn't be driven away.
 

sinewave

MB Enthusiast
Joined
Jan 29, 2012
Messages
1,495
Location
Cheshire
Car
BMW 520 M-Sport Touring, Kawasaki ZX10R KRT (AMG Eater!)
I was joking before this 'gets outa hand'! ;)
 
OP
OP
M

maxima

Active Member
Joined
Mar 6, 2005
Messages
164
Location
London
Car
W211
my 2nd wife used to say - in every joke, there is a pinch of joke.
 
OP
OP
M

maxima

Active Member
Joined
Mar 6, 2005
Messages
164
Location
London
Car
W211
that was the point yeah ;)
 

Users who are viewing this thread

Top Bottom