Wireless Keyfob for Fleetwood

[8Muddypaws]

We just spent a week in Paso Robles. While we were there one of our door remotes did something weird. The LED that should only illuminate when one of the two buttons is pressed is now on 100% of the time.

The keyfob is an 'ELF777K'. They appear to be quite common but it appears they have been used in a variety of applications. E.g. alarm systems, door locks, remote start fobs and who knows what else.

So far I've found them operating on both 403 and 533MHZ BUT I have no idea which bad I need, or even if I can replace them with a 'generic' ELF777K in the right band.

My system has an RKE100FW control box that apparently has a bad relay. I have not been able to lock the door with the fob for several years but unlocking works. I came across a post make by Gary RV Wizard on IRV that contained information about replacing the relays but so far I have not been able to find a source. I'll pull the control box out tomorrow. It's easy to get at.

Another direction this might go is to replace the control box and both fobs. I saw several alternative systems on eBay but I wonder if anyone has used one of them on and RV?

 

[Kirk]

Most RV key fobs in North America use the 315 MHz frequency band. Could you try it on one frequency and if it doesn't work, try the other?

 

[8Muddypaws]

I suppose I could but I'd rather get it right on the first try/buy.

 

[95f5334j]

I also have the RKE100FW control box in my Expedition with only one working fob. I've tried a couple of replacement fobs but no luck. Both keys of course work so it's not the end of the world. Now I'm thinking about a replacement lock system using this RVLock Atlas Keyless Handle for Class A & C Motorhomes - 2nd Generation ..... someday.

 

[gwinger]

Should be an FCC ID number on it. May help in finding the correct replacement.

 

[8Muddypaws]

The FCC ID is ELF777K. I should have spelled that out in my original post.

Most of the sellers do not specify which frequency the fobs are using but I've seen dozens of different fobs with the same FCC ID.

The attached picture is the RKE100FW control board. It offers no clue about the band it receives. There are no markings on the other side.

Funny thing. When I reinstalled the board the lock function work exactly 5 times but after that the lock actuator would make a noise but not lock.

I'm thinking that indicates a bad relay. They cost about $2 each but they are tricky to solder because it's a double sided board and I don't happen to own a wave solder station.

I found a wiring diagram! (Also Attached)