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Hi all,
I bought a rear diffuser Brabus style for my Mercedes C400 2015 equiped with a keyless go, hands free system.
The diffuser is an after market (China), and it was not pre-drilled for the parking sensor. So I was planing to do myself but at the end I choose to bring my car to a body shop here in Montreal and the issues started. After 4h waiting in the store, he brought me the car, the diffuser seems fitting but just the look. I attached some picture. So next day I realized that the opening the trunk using my foot, doesn't work. I don't also imagine to test the park assist. He also tried to connect the rain led light of the diffuser after a second visit, and I started to have an error message saying that I need to check left rear turn signal. So I've disconnected everything. The guy from the body shop said that the carbon fiber is more thick than the OEM abs diffuser and can impact the antenna signal of the hands free system localised inside the diffuse. Could you please help me. What I should ?
For the diffuser led light, I tried one post here but didn't work, I got a message "Blind spot not operative". It's true that all W205 are not coming with the same options.
Sorry I have to be honest it doesn't look on the car it it doesn't give a perfect rounding around the exhaust tips. The last cannot be seen. Its an aftermarket with so many issues. I have a 2015 AMG line I installed OEM C43 2019 diffuser and exhaust tips. It was a simple remove and install process. No cutting no drilling nothing.
Thanks, how much it cost you ? is it including all parts, I mean the trim that come inside the diffuser, where the antenna is connected for the keyless go ?
I live in Beirut, Lebanon. I ordered it from Kunzmann which is an OEM online shop based in Germany. They only ship within Europe. It came as a package diffuser + exhaust tips. I removed my stock and installed it. Everything worked same as before.
It appears you have multiple electrical issues going on here that need to be resolved, but as it relates to the hands-free trunk sensor I can agree with the mechanic by thinking the carbon fiber is interfering with the sensor signal. Carbon fiber is conductive and is actually pretty good at blocking radio/RFI/sensor signals, so your mechanic may be right on this one.
Looking at the sensor array and where it is placed in the video below, I can see how a carbon fiber diffuser could block the sensor signal:
I would consider pulling the hands-free sensor array out of the diffuser and confirm it still works by just "hanging there" outside of the diffuser. This will confirm the carbon fiber is blocking the signal.
Sorry I have to be honest it doesn't look on the car it it doesn't give a perfect rounding around the exhaust tips. The last cannot be seen. Its an aftermarket with so many issues. I have a 2015 AMG line I installed OEM C43 2019 diffuser and exhaust tips. It was a simple remove and install process. No cutting no drilling nothing.
Do you happen to know the part numbers? I'm in U.S.
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W205 C400 Carbon fiber rear diffuser Brabus style - issues
