BMW "diamond" key - how resistant to water?

[E38Ross]

Random question i know....i go running quite a lot (in fact, too much for my sanity, i suspect) and always run with my car key in the small back pocket....never had any issues with my E21 key as it was just a key as it were. i was wondering whether it's an issue if the key gets a bit wet if it's raining quite heavily outside??

as said, i know it's a bit of a random question!!

by the way, it's one of these keys...



cheers

[custardkid]

quite...
i've been surfing with mine, it was in a dry bag... that wasn't dry

It was pretty damp, but worked fine

Custard

[TheEnd]

It'll get away with being damp, but there are no types of seals around the top and bottom halves.

[RiccardoG]

While we are on topic, the second key on my E39 (2001 year) has pretty much never been used from day 1. I assume its therefore fully discharged.

Does anyone know how I charge it up? I know that it should charge when in the ignition, but given its a 10 year old key I assume that the internal battery is dead now. Can this be replaced?

[MarkwG]

RiccardoG said:

While we are on topic, the second key on my E39 (2001 year) has pretty much never been used from day 1. I assume its therefore fully discharged.

Does anyone know how I charge it up? I know that it should charge when in the ignition, but given its a 10 year old key I assume that the internal battery is dead now. Can this be replaced?

yep, it'll be discharged then - it won't open the car or shut off the alarm, but the ignition may respond to it, I guess, no harm in trying. If it starts ok, run it for a while with the other one near by, just in case. If it doesn't, there are ways of opening up the key & changing the battery available on the web.

[essayer]

After a few years of not being used, my spare stopped opening the car but would still start it, once it had charged up a bit (while in the ignition) it needed resyncronising with the alarm, now it works fine.

[RiccardoG]

Thanks guys, will try it first and see what happens.