[drukpa]

I have an issue with the key fob not being recognized when the car is near a cell tower. The key fob on my car is the 868Mhz one, and I believe 3G signal on the cell tower is 850Mhz.

When near a cell tower, I have to place the key near the rear spoiler to lock/unlock the car. Also have to the place the key on the steering column to start the car.

Don't have any issues with FM radio reception near or far away from cell towers.

When away from cell towers, the key fob and comfort access works properly from about 20 meters away.

Car has no tints (some have reported issues with tints).

Bought the car used, so don't know if it was like this from the factory.

Is it a problem with the diversity antenna? I opened it up, there are is no corrosion or broken wires. Am thinking the signal from the antenna has gotten weak with age.