RF interference

Yesterday a friend of mine calls me and tells me that the alarm on his wifes van is not accepting commands from the remotes and that they had to leave  the van about 20 miles from home.  He asked me to go with him to get the van and to check on the alarm( I installed the alarms on both his car and his wifes). We get there and the alarm would not accept any commands from the remotes, so I tried the override and it didn't work either. I said fine I'll unplug the harness so we can take the van home.

After I'm done he tries to get on his car but now his alarm won't accept the commands and he only has the remote on his hands , the keys are inside his car which is now locked. After a couple of minutes of trying the remote from different parts of the car it finally opens the doors. We get back to his house and I re-connect the harness on his wifes van and everything works fine. His alarm works fine too and the funny thing is that they are not even the same brand.

The van has an APS-997 and the car a Galaxy 5000rs. The spot where the alarms went dead was on the parking lot of a municipal complex where the police and  dpw crews are dispatch from. And the police radio antenna was about  30 yards from the cars.

Has anyone ever experience something like this before.

I'm glad I'm not the only one who has experienced this.

But I'm still puzzled about the fact that the valet switch didn't work on the APS-997. And it was working when I re-connected the harness at his house. I didn't disconnect the valet switch just the long harness.

It was the valet switch. I do a lot of Audiovox units.

And it did work fine at his house valet and everything, that is why I find this so strange. One thing is to have RF interference and not been able to use the remotes, but the valet been affected by it.