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Everything works fine, it opens with handles, evens starts with a button. But as soon as I start the move (no matter in R or D) I've got a message "KEY NOT DETECTED" and it rings 3-5 times.
It repeats after 10-20 minutes of driving, ring 3-5 tims, then again after 15-20 more minutes it starts ringing again and showing that key not detected, but at this time it will stop only if I stop a car and turn it off.
I still can drive but that error on dash and sound annoys me a lot, and I scared that this problem may be worse than it looks for a first sight, and broke something else in future.
No errors shows with star diagnosis and any other.
I changed 2 keys, and same problem for both.
Everything works perfect until I start moving, even if I choose drive or reverse, and stay on brakes it wouldn't show that message. It start ringing only after slight movement.
I found solution by myself. I installed xentry and did a diagnosis by myself.
By some reasone the key works all the way, but car can't find it when running. And the EIS can't recognize the key via keyless go protocol.
I think I should change the ELV and EIS to make it works. Will make an update to the topic later.
Problem is weird and workshops can't figure it out. Only deep diagnosis by myself lead me to the reasons.
Interesting! My 2013 C250 bought new in late 2012 has a keyless go and ILS. In my experience, the "Key Not Detected" error will come on right after starting the car if the battery inside the keyfob drops below 3.1 volts.
Mind you, CR2025 is rated at 3.0 volts. Pressing the "OK" key will clear the error, and the car will run fine. However, the error will come back the next time I start the car.
Name-brand coin batteries don't last long and often the error stays. Made me think that something else is wrong!
Installing a coin battery with a 3.2+ volt reading from a no-name brand always saves the day. But hey, this is just me. To each their own!
I found solution by myself. I installed xentry and did a diagnosis by myself.
By some reasone the key works all the way, but car can't find it when running. And the EIS can't recognize the key via keyless go protocol.
I think I should change the ELV and EIS to make it works. Will make an update to the topic later.
Problem is weird and workshops can't figure it out. Only deep diagnosis by myself lead me to the reasons.
hi, i got similar situation. How did you solve the issue
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Keyless go "KEY NOT DETECTED" After starting movement
