W203 CENTRAL LOCKING DOES NOT WORK FROM FAR !
I have a 2001 model CDI 200 and my central locking does not work from far ! Ive changed the remote key batteries but still it opens only when i point it at a foots distance from the drivers door only ! Even the cars radio seems to have developed a poor radio signal ! can someone tell me what the problem is ?? i assume that the car's radio antena reception is weak. Can someone tell me where the antena goes after it leaves the head unit behind the dash ? Is there a power antena signal booster hidden somnewhere ?? This is driving me mad !!

trader
Last edited by Trader2010; Oct 3, 2010 at 12:00 AM.

Another funny thing is that it works from a larger distance(say 5feet ) when i lock the car after a drive. It looks like as though something got `charged' after the drive. Before the drive, it works only at 1 foot distance.
Is there someone who can throw some more light on the problem ?

Another funny thing is that it works from a larger distance(say 5feet ) when i lock the car after a drive. It looks like as though something got `charged' after the drive. Before the drive, it works only at 1 foot distance.
Is there someone who can throw some more light on the problem ?

Cost of tints has nothing to do with it. You can't put a metallic tint on the rear window of a Benz. You need to find out if VCool tints are metallic.
Last edited by Glyn M Ruck; Oct 3, 2010 at 05:40 PM.

Then as I said in the other thread.
Check connection at sticky pad TDC rear window under the headliner. (no need to remove liner)
Check earth/ground on antenna amp
Check that antenna amp has not blown - They do quite often & have been redesigned many times.
You say your radio reception is awful - It uses the same RF antenna embedded in the rear glass. You have an antenna circuit problem. Do checks above.
Good luck
Last edited by Glyn M Ruck; Oct 3, 2010 at 05:19 PM.
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Thanks for the inputs. Will check with the Vcool dealer if the tints are metallic. my guess is that they should be.... Will also check out the rear RF antenna booster amp (any idea where it is located at the rear ?) ?
Is there a schematic diagram available to show the location of the amy and RF antenna wiring for the cdi 200 ?
kalim.

And how can we test them to see if they are bad? Is there a way to do it with a multimeter?




Get a clean rag. Make it into a ball. Press up on trim along rear of glass along top edge. If it works then it is the above problem.
If the rear fuse box is not working well. Same problem.
You should also have weak radio reception.
I have a 2001 model CDI 200 and my central locking does not work from far ! Ive changed the remote key batteries but still it opens only when i point it at a foots distance from the drivers door only ! Even the cars radio seems to have developed a poor radio signal ! can someone tell me what the problem is ?? i assume that the car's radio antena reception is weak. Can someone tell me where the antena goes after it leaves the head unit behind the dash ? Is there a power antena signal booster hidden somnewhere ?? This is driving me mad !!



I'm going crazy with this problem
Last edited by CrazyTode; Mar 19, 2013 at 10:24 PM.
Thank you all for the insight into this problem. I assume my problem was a failed antenna as well b/c the fuse is blown and a new immediately goes once installed. So I went ahead a bought a new antenna, installed it and same issue exist, fuse goes.
For further testing I disconnected the new antenna completely put in a fuse and it blows right away.
Does anyone have anymore ideas already spent the cash on a new antenna so I am kinda committed to fix this ...
FYI: c230 2005 sedan





