“Key battery” message won’t go

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essexjones247
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Posts: 5
Joined: Sat Aug 04, 2018 10:38 pm
Drives: 1.2 TDI Bluemotion
Location: Essex

“Key battery” message won’t go

Post by essexjones247 »

Hi all,

Just got a 2010 1.2 TDI Bluemotion Polo and it was displaying the “key battery” message. I replaced the battery, still got the message. I tried another battery from a known VW key fob from my wife’s car, still getting the message, does anyone have any ideas?
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iichel
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Joined: Fri Nov 14, 2014 2:14 pm
Drives: Polo 6R 2.0 TDI, Passat B8 2.0 TSI
Location: http://mypassat.nl/

Re: “Key battery” message won’t go

Post by iichel »

if you have a second key, what happens if you use that one?
essexjones247
New
Posts: 5
Joined: Sat Aug 04, 2018 10:38 pm
Drives: 1.2 TDI Bluemotion
Location: Essex

Re: “Key battery” message won’t go

Post by essexjones247 »

Hi, thanks for the reply, there was only one key with the car.
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iichel
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Posts: 6361
Joined: Fri Nov 14, 2014 2:14 pm
Drives: Polo 6R 2.0 TDI, Passat B8 2.0 TSI
Location: http://mypassat.nl/

Re: “Key battery” message won’t go

Post by iichel »

Very interesting. It might be that the reader coil is detecting a vague or weak signal and that might be failing. But that's pure speculation on my side.
essexjones247
New
Posts: 5
Joined: Sat Aug 04, 2018 10:38 pm
Drives: 1.2 TDI Bluemotion
Location: Essex

Re: “Key battery” message won’t go

Post by essexjones247 »

Thanks for the idea, any and all are welcome. I’ve got to get a spare key so will find out when I get one
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