Reprogram keyless fob in 2000XJ?

Mar 04, 2007 16 Replies

The batteries in my stock keyless entry key fob died a few days ago. I replaced the batteries with the same PN new ones, but the remote still doesn't work. How do I reprogram it?



Thanks,



Carl


Take it to the dealer and give them lots of money?

Earle

Thanks for that helpful suggestion. :-)

Carl

I'm thinking that your batteries weren't really bad. Are you sure you put the new ones in right?

Earle

Yup, I did. The remote would only work if I pushed the button a lot of times or work sporatically, which I figured was dead batteries.

Carl

I think it's the switch. I had an MP3 player do this once. Finally gave up the ghost entirely. Maybe they can take it apart and clean the contacts. If you live in some place with a lot of weather, then this can happen.

Earle

Carefully take it apart and clean the contacts with rubbing alcohol and a cottonball. Then let it dry and reassemble.

Thanks doug. It didn't look dirty when I took it apart and blew it out, it fixed it.

Carl

Thanks for the link and PDF, Bill.

Carl

DougW proclaimed:

Rubbing alcohol is a terrible electronics cleaner, too much other stuff in it in addition to the isopropyl. Best cleaning is with a chamois stick and isoproply or one of the other head cleaners. Should be available in fairly small bottles at nearest rat shack or other electronics store. MIGHT be able to get it clean enough without disassembly by using a spray tuner cleaner followed by a blast of duster. The switches themselves tend to be very small and rather easy to lose some tiny part, so spray clean is recommended unless the OP is very good with small mechanical parts and can de-solder and resolder then remove all flux properly [left over flux tends to be a big source of later failures]. The switches also have a bad habit of cracking loose from their mounts, again resoldering fixes. Really not enough voltage or current to keep a mechanical switch's contacts clean or burn thru minor corrosion--the hall effect or simple magnet sensor types are much better, although they also get cruddy and benefit from careful cleaning with isopropyl or other electronic cleaner followed by careful blow dry to remove all residue.

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Used by recording, TV and broadcast studio technicians the world over. Saved my a$$ numerous times during critical sessions.

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