The use of Infrared Key...

E280T

Senior Member
Joined
Nov 5, 2009
Messages
100
Reaction score
0
Hello.

I am the proud owner of a W124 E280 T and it came with 3 original Infrared Keys. My only question is why MB decided to introduce this Infrared method as opposed to a normal Remote Controlled Key. I notice that it's handy but at the same time annoying, for instance when I wanna use the Infrared on the passenger side or if my passengers are at the car and I am still to far off for the Infrared to receive my 'open' command...

Anybody? ;)
 

television

Always remembered RIP
Joined
Mar 14, 2005
Messages
164,073
Reaction score
367
Age
89
Location
Daventry
Your Mercedes
2002 SL500, 216 CL500, all fully loaded
Are the batteries good,,I cannot ever recall this ever as being a problem
 

roadhog

Senior Member
Joined
Aug 2, 2007
Messages
1,616
Reaction score
2
Location
Sunny Norfolk
Your Mercedes
W124 300D x2, C124 300
Don't laugh! I have to hold my key fob to my chin to get any range out of the thing. Stop laughing at the back there! New batteries made no difference. Top Gear did a little on the subject a while back with JC's SL so that proves it beyond doubt, obviously. I use the chin rather than the temple as it looks slightly less ridiculous. I think? :lol:
 
OP
E

E280T

Senior Member
Joined
Nov 5, 2009
Messages
100
Reaction score
0
  • Thread Starter
  • Thread starter
  • #5
Aha. but the thing is, I don't have a problem with it. It works fine, but only when I aim the key towards the door handle/infrared receiver. (isn't that how it works?)
 

robert_winter_1000

Senior Member
Joined
May 21, 2009
Messages
295
Reaction score
10
Location
The Hague, The Netherlands
Your Mercedes
MB E350 CDI (W212)
Aha. but the thing is, I don't have a problem with it. It works fine, but only when I aim the key towards the door handle/infrared receiver. (isn't that how it works?)

No, it is very strong. From a distance of about 30 meters it just open the doors without even aiming the key towards the car!

Regards,

Robert
 
OP
E

E280T

Senior Member
Joined
Nov 5, 2009
Messages
100
Reaction score
0
  • Thread Starter
  • Thread starter
  • #7
Aha... Now I get it! I thought it was just the type of receiver... But my red light on the key also lights up real weak so I guess I need to change the battery ;)
 

Alex Crow

Senior Member
Joined
Jul 9, 2009
Messages
10,677
Reaction score
47
Location
Super Suffolk
Your Mercedes
W169, W124, w202, W203, KTM 250 EXC, VW T25 camper and a Polo in a pear tree
well i find the IR ones do need to be pointed at the car's recievers, and 30M is way too far away!!

E280T, i would think they used IR instead of radio as it is harder to capture the code (i think these earlier ones did not have the rolling code generation) and possibly less prone to outside interference. this is a guess, but for sure MB wil have had their reasons, the 2x IR reciever units will be more expensive to manufacture than a simple FM aerial.
 
Last edited:
OP
E

E280T

Senior Member
Joined
Nov 5, 2009
Messages
100
Reaction score
0
  • Thread Starter
  • Thread starter
  • #9
Maybe this can also be it, cause my car is from 1994 (W124 model).
The reason that I thought the receiver needed to be pointed at is because there's a green/red light on the door handle of the driver's side and on the trunk but not on the passenger side...
 

robert_winter_1000

Senior Member
Joined
May 21, 2009
Messages
295
Reaction score
10
Location
The Hague, The Netherlands
Your Mercedes
MB E350 CDI (W212)
Maybe this can also be it, cause my car is from 1994 (W124 model).
The reason that I thought the receiver needed to be pointed at is because there's a green/red light on the door handle of the driver's side and on the trunk but not on the passenger side...

I had the same problem with my W124 300D. Now I am telling about W211 E320 CDI.

Robert
 

Alex Crow

Senior Member
Joined
Jul 9, 2009
Messages
10,677
Reaction score
47
Location
Super Suffolk
Your Mercedes
W169, W124, w202, W203, KTM 250 EXC, VW T25 camper and a Polo in a pear tree
yes robert, but i am talking about w124 IR locking :D
 

television

Always remembered RIP
Joined
Mar 14, 2005
Messages
164,073
Reaction score
367
Age
89
Location
Daventry
Your Mercedes
2002 SL500, 216 CL500, all fully loaded
I like the ones that tint their windows and then complain that the firm has messed up their RF locking
 
OP
E

E280T

Senior Member
Joined
Nov 5, 2009
Messages
100
Reaction score
0
  • Thread Starter
  • Thread starter
  • #15
No such thing here... Just all original MB (I believe manufacturers are better in styling their cars than I am)
 

television

Always remembered RIP
Joined
Mar 14, 2005
Messages
164,073
Reaction score
367
Age
89
Location
Daventry
Your Mercedes
2002 SL500, 216 CL500, all fully loaded
No such thing here... Just all original MB (I believe manufacturers are better in styling their cars than I am)

I think that includes all of it right down to the wheels on most, and even there one should use the correct options
 

Alex Crow

Senior Member
Joined
Jul 9, 2009
Messages
10,677
Reaction score
47
Location
Super Suffolk
Your Mercedes
W169, W124, w202, W203, KTM 250 EXC, VW T25 camper and a Polo in a pear tree
robert, your key has IR and RF. it is the RF that gives you the range and unidirectional capability, and the IR that gets you in when the RF fails:D
 

turbopete

Senior Member
Joined
Feb 4, 2009
Messages
14,209
Reaction score
331
Age
48
Location
Spennymoor
Your Mercedes
2017 '17' Ford Mondeo 2.0TDCi ST Line X 180 (sorry)
Don't laugh! I have to hold my key fob to my chin to get any range out of the thing. Stop laughing at the back there! New batteries made no difference. Top Gear did a little on the subject a while back with JC's SL so that proves it beyond doubt, obviously. I use the chin rather than the temple as it looks slightly less ridiculous. I think? :lol:

it doesnt work with my key. i tried it. no idea why not though
 
Top Bottom