C-Class (W202) 1995-2000: C 200 CDI, C 220 CDI, C 270 CDI, C 180, C 200 K,C 230 K, C 220, C230, C 280

Key Radio Frequency not working

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Old Jun 3, 2025 | 11:37 AM
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Leandroo's Avatar
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1998 C240 w202
Question Key Radio Frequency not working

hello, i just found out the w202 later models (with the smart key or whatever it is called) have a RF that lets you lock and unlock the car from distance. I thought it only worked pointing to the door (and the receiver on my drivers door isnt working, lol). my central lock buttom works fine and if i point both my keys to the passangers door it works too, but i cant do it from distance. i'm wondering if my car has a problem on the radio receiver. how can i check it? where is it located? can someone please help me? thanks!!
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Old Jun 10, 2025 | 11:06 AM
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From: MBworld
bone stock E55 AMG
moved to W202 forum...
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Old Jun 10, 2025 | 11:48 AM
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W209, W124
I’m not familiar with the 202 but on later models the RF depends on an antenae amplifier. It can get taken out during a window tint instalation. It has a fuse and there is also an alarm siren that dies and kills the fuse.

Do radio stations come in OK?
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