Car Unresponsive to Spare Key Fob Spare Key Fob

DNADoc

Well-Known Member
First Name
Buck
Joined
Mar 3, 2019
Threads
15
Messages
83
Reaction score
51
Location
San Clemente, CA
Vehicles
MB S560e
Country flag
About 4 months ago I got a low battery warning in my Fob and replaced the batteries in both the fob I use and the "spare." Both fobs were able to lock and unlock the doors. Then I had to "resync" the fob I use by placing it in the tray in order to clear the low battery warning.

Today, I took the "spare" fob out of the drawer to give my wife a Taycan lesson and the car was completely unresponsive to the fob. No locking and unlocking....nothing. It can't be a dead battery because I just replaced it....

Please advise.

Buck
Sponsored

 

W1NGE

Well-Known Member
First Name
Adrian
Joined
Jan 11, 2021
Threads
33
Messages
8,824
Reaction score
5,284
Location
Aberdeen, Scotland
Vehicles
GTS ST, Macan T
Country flag
About 4 months ago I got a low battery warning in my Fob and replaced the batteries in both the fob I use and the "spare." Both fobs were able to lock and unlock the doors. Then I had to "resync" the fob I use by placing it in the tray in order to clear the low battery warning.

Today, I took the "spare" fob out of the drawer to give my wife a Taycan lesson and the car was completely unresponsive to the fob. No locking and unlocking....nothing. It can't be a dead battery because I just replaced it....

Please advise.

Buck
Did the key flash?

May need re-pairing by the dealer.
 

Capt Mike

Well-Known Member
First Name
Mike
Joined
Aug 24, 2021
Threads
16
Messages
186
Reaction score
53
Location
Half Moon Bay
Vehicles
2020 Taycan4S. 2017 Macan S
Country flag
About 4 months ago I got a low battery warning in my Fob and replaced the batteries in both the fob I use and the "spare." Both fobs were able to lock and unlock the doors. Then I had to "resync" the fob I use by placing it in the tray in order to clear the low battery warning.

Today, I took the "spare" fob out of the drawer to give my wife a Taycan lesson and the car was completely unresponsive to the fob. No locking and unlocking....nothing. It can't be a dead battery because I just replaced it....

Please advise.

Buck
I found that if you leave the fobs near the car, the batteries wear out quickly...the dealer and I discussed this and we think that the car and fob continue to "talk" and that wears the battery down. I know that sounds stupid but I no longer keep the FOB near the car and haven't had a problem since!
 

W1NGE

Well-Known Member
First Name
Adrian
Joined
Jan 11, 2021
Threads
33
Messages
8,824
Reaction score
5,284
Location
Aberdeen, Scotland
Vehicles
GTS ST, Macan T
Country flag
I found that if you leave the fobs near the car, the batteries wear out quickly...the dealer and I discussed this and we think that the car and fob continue to "talk" and that wears the battery down. I know that sounds stupid but I no longer keep the FOB near the car and haven't had a problem since!
Your dealer has stated the obvious!

If the key is kept within 1 - 2.meters of the car and the key flashes then it will be communicating with car constantly. Either keep further away and / or in a Faraday pouch.
Sponsored

 
 




Top