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E 46 ignition key battery - Printable Version

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+--- Thread: E 46 ignition key battery (/showthread.php?tid=94527)



E 46 ignition key battery - Kurt Adv - 16-10-2020

What battery does the E46 ignition key use? I don't feel like stripping the key first to check.


RE: E 46 ignition key battery - Kyle - 16-10-2020

If it's original then it uses a rechargeable battery that is soldered onto the board. There are replacement units that can be soldered onto the board or you could purchase an aftermarket key that uses a replaceable battery.


RE: E 46 ignition key battery - Kurt Adv - 16-10-2020

Thanks Kyle, I'm aware of all of that, but don't know the code of the battery


RE: E 46 ignition key battery - 444YYY - 17-10-2020

It’s LIR 2025


RE: E 46 ignition key battery - DonovanPorter - 19-10-2020

i replaced mine the other day , took about 30 minutes of messin around to separate the fob, replaced the battery and done works like a charm (i replaced my battery with a CR2016)


RE: E 46 ignition key battery - 444YYY - 19-10-2020

(19-10-2020, 08:02 AM)DonovanPorter Wrote: i replaced mine the other day , took about 30 minutes of messin around to separate the fob, replaced the battery and done works like a charm (i replaced my battery with a CR2016)

Is this an oem key or aftermarket replacement key?


RE: E 46 ignition key battery - DonovanPorter - 19-10-2020

OEM key

in my opinion i doubt the original batteries charge


RE: E 46 ignition key battery - Kurt Adv - 19-10-2020

CR 2016, thank you, that's the info I wanted.


RE: E 46 ignition key battery - DonovanPorter - 19-10-2020

cool.


RE: E 46 ignition key battery - 444YYY - 19-10-2020

Let us know how it goes, CR2016, has no pins that has to be soldered... if you open it up and you find the battery has pins... then it is LIR2025.


RE: E 46 ignition key battery - DonovanPorter - 19-10-2020

For reference this is my key fob.
2004 318i Touring E46

[attachment=2546]
[attachment=2547]


RE: E 46 ignition key battery - Kurt Adv - 21-10-2020

Just changed the battery, but the key had a CR 2026 battery, a bit thicker than the CR 2016.


RE: E 46 ignition key battery - DonovanPorter - 21-10-2020

does it work correctly ?


RE: E 46 ignition key battery - Kurt Adv - 21-10-2020

Yes, but I'll fit the correct battery asap.


RE: E 46 ignition key battery - DonovanPorter - 22-10-2020

great


RE: E 46 ignition key battery - Coisman - 22-10-2020

Been using the same keys for my 2003 with no issues. I just swop them out every 3 months.