Hmm..mine has a CR 2025. Not sure what the difference is since they're all 3V. Anyway, mine died a few weeks ago. Was a bit surprised it went suddenly with no warning. On my Subaru, the range begins decreasing, which is an indication it's time for a new battery.BKipp wrote:Super annoyed -- letting everyone know so they can be sure to have a CR2032 battery on hand as well as NOT accidentally start the car while the charger is in.
Why bother talking to technician, keep spare keyfob batteries, problem solved. That's what I've been doing, I get 14 to 16 months out of a battery. Seems like a no brainer to me. Don't mess with the car in the cab when it's recharging, also. Maybe read the owners manual, too, a couple of times, for proper procedures.BKipp wrote:Haven’t found the un-locking pin in the manual. Will search.
Car turned off. My honey brought a battery home a few hours later (absolutely no low battery warning — just straight from working to dead key fob)
Let the car sit overnight. New battery in fob, put a heavy foot in the brake and started car. YES it started. Not sure what happened to resolve it.
Will be sure to chat with technicians next time the EGolf needs some TLC.
I went ahead and did just that. It appears the battery cases on these are better than older Audi keys (where my fear of opening too many times came from). It is indeed a CR 2025, made by Sony and it is lithium. My experience using lithium batteries at work (AAs and AAAs) in things like wireless microphones is they they suddenly drop to nothing when they reach end of charge, unlike NiMh rechargeables or alkaline batteries which have a much longer slope of discharge and give some warning before going dead. That probably explains why people have experienced sudden death of the key fob. Spare batteries sound like a very good idea to keep on hand.johnnylingo wrote:Crack it open and see if yourself. There's no tools required, just extend the key and rotate on the plastic flap on the opposite side of the buttons. Mine came with a Panasonic CR2025 3V (made in Indonesia). I replaced it with an Energizer (made in Japan) that cost $6 for a 2-pack at the supermarket. Call me old-school but I always trust the Japanese stuff over anything from China or SouthEast Asia.
I tested the old battery with a multimeter and got 2.9V. In hindsight, I probably could have just removed and re-inserted the battery and gotten enough juice out of it to at least unlock the car I'm sure for at least one or two times. But I can't test that theory right now because my girlfriend has the e-Golf.