Originally Posted by umermariner

Hello Guys,
Unfortunately, I ended up in the same boat as you ... since my FM reception is fine (not that I care about it as much), but FOB only works when I am next to rear window (close to Diversity Amp off course). All my research pointed me to this issue, however; the amp at dealer ship is about 375 USD... would like to confirm before I bite that bullet. I read so many threads, and kind of summarize all the information. It would be helpful (for me and the next victim) if anyone can answer questions below.
1. Is there a way to confirm it is diversity amp before I buy another one.
2. Anyone tried fixing this issue successfully, instead of getting a new one?
3. I took out the panels to see the amp (wanted to make sure the mhz, snapshot attached)... It only has FDB 315 written on top... assuming it means its 315 MHZ (I dont have easy access).
4. I see the following three options for the amplifire. Dealership recommended me the 2nd one, however; I guess its in my best interest to find the latest one...
a. Factory install diversity amplifier: 65 20 6 931 719 (that I have now)
b. Revision 1 diversity amplifier part no: 65 20 6 988 057 (Dealership selling me for about 375)
c. Revision 2 diversity amplifier part no: 69 20 9 193 836 (I think I should get).

Also, does it require any initialization once installed? I took out leads to older amp to test, and then put them back. However, after that, even when I lock the car, security system does not kick in...

Thanks in advance