The use of Infrared Key...

[E280T]

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]

Are the batteries good,,I cannot ever recall this ever as being a problem

 

[roadhog]

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:

 

[robert_winter_1000]

Are the batteries good,,I cannot ever recall this ever as being a problem

I absolutely agree. I have no problem what soever with this key!

Robert

 

[E280T]

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]

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

 

[E280T]

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]

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.

 

[E280T]

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]

well i find the IR ones do need to be pointed at the car's recievers, and 30M is way too far away!!

Well Alexander, I am going to keep it in mind and tomorrow I will inform you better about how long is the distance! But it is really far!

Robert

 

[robert_winter_1000]

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]

yes robert, but i am talking about w124 IR locking

 

[robert_winter_1000]

OK Alexander, I understand you now. Do you know the difference in the design which make such huge difference in the functionality?

Robert

 

[television]

I like the ones that tint their windows and then complain that the firm has messed up their RF locking

 

[E280T]

No such thing here... Just all original MB (I believe manufacturers are better in styling their cars than I am)

 

[television]

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]

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

 

[turbopete]

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

 

[roadhog]

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

Wrong chin? :lol:

 

[turbopete]

Wrong chin? :lol:

quite possibly!