No key detected issue

[Gintys]

use a multimeter.

You see, I am not sure where the wires come from to the antena

 

[Gintys]

Neither, I have an idea what voltages should it be

 

[The Car Stereo Company]

you will need to trace the wire back somehow. not sure how apart this car is, but the antenna wires are usually paired together. signal and ground/shield. you can at least check the first connection at the antenna itself. usually theres a connector near by. check both ends of that then if thats good, trace those wires to the module. might require some disassembly, but its part of the elimination process to find your issue.

 

[Sage]

If none of the buttons work, are you positive batteries are in correctly? Only one fob or 2?? Both don't work?

 

[Gintys]

If none of the buttons work, are you positive batteries are in correctly? Only one fob or 2?? Both don't work?

I only have one fob, and if the batteries would be incorrectly, I think it would not work in the backup programming slot aswell

 

[Sage]

Back up slot might be for dead batteries. Remove the batteries and see if it works

 

[Roush2568]

You can use the fob in the fob slot even if no batteries or completely dead.