So I finally Replaced Fob Batteries

Al_in_Philly · Dec 16, 2017

Al_in_Philly said:
I have one of the first 500 Mk7 R's, delivered back in February 2015. Both sets of keys are still operating happily on the original batteries. Go figure. . .

FU Fed; 8 days after I wrote that my car tells me that I need to replace my key fob batteries. IT'S ALL YOUR FAULT!!!

TheSwede · Dec 16, 2017

Remark:

I don’t think the fob sends any signal when not used since mine lasted about 4 years/48 months for the 1.4TSI we have. The Golf R is 3,8 years old and I haven’t replaced the battery of any key yet (delivered in Feb 2014).

As you say very easy done.

/Peter

Al_in_Philly · Dec 16, 2017

KevinC said:
Doesn't it employ a passive RFID tag, which uses zero power? Or is that just the immobilizer? Conflicting information out there on the interwebs.

This discussion prompted me to swap my batteries tonight. The car is 18 months old, so it was time anyways, even though they were still working fine.

Passive RFIDs work through being excited by an EMF burst at the host, and the RFID converting that energy into enough electrical current to power its operation. That's what is going on when you put your key up against the steering column.

The Fed · Dec 16, 2017

Al_in_Philly said:
FU Fed; 8 days after I wrote that my car tells me that I need to replace my key fob batteries. IT'S ALL YOUR FAULT!!!

Bahaha.

So I finally Replaced Fob Batteries

Al_in_Philly

Autocross Newbie

TheSwede

Ready to race!

Al_in_Philly

Autocross Newbie

The Fed

Old Guys Rule