What to do if your car key battery has been replaced?
Try swapping the two batteries so to provoke the Spare Key to generate the message. If it does, then you know it?s the battery Terrapin, I got both of my keys out and started swapping batteries and keys. I must admit that between the four parts, and running out to the car to test it, I am no longer sure of what I did to make it work.
Can a key battery be replaced on a Mercedes?
Sometimes a little luck helps too. Most important is that you resolved your problem and saved big bucks! I bought some El Cheapo batteries from IKEA and went through two of them showing “replace Key battery” — the third one fixed it. Perhaps there is a lot of variability in the batteries.
Is there a spare battery in my key fob?
I have a spare battery so I checked the voltage of the battery in the key fob and the spare one, both are at about 2.91-2.96V. So I’d also like to know how to make the message disappear.
Why does the change key battery warning still appear?
It was only after the smart function sensitivity had significantly faded over a 1-2wk period before the change key battery warning appeared. Does anyone have any ideas of how to fix this issue?
When to replace the battery in a key fob?
Make sure that you use the correct type of battery. A different battery will have a different voltage and the system may not register properly, even if the fob still works. If you have multiple key fobs, it’s a good idea to replace all of the batteries at the same time as they tend to run out at the same time.
Try swapping the two batteries so to provoke the Spare Key to generate the message. If it does, then you know it?s the battery Terrapin, I got both of my keys out and started swapping batteries and keys. I must admit that between the four parts, and running out to the car to test it, I am no longer sure of what I did to make it work.
Sometimes a little luck helps too. Most important is that you resolved your problem and saved big bucks! I bought some El Cheapo batteries from IKEA and went through two of them showing “replace Key battery” — the third one fixed it. Perhaps there is a lot of variability in the batteries.
It was only after the smart function sensitivity had significantly faded over a 1-2wk period before the change key battery warning appeared. Does anyone have any ideas of how to fix this issue?