Xhorse VVDI Benz FBS3 Smart Key Battery Discharged Solution

Xhorse VVDI Universal Benz FBS3 Smart Key is suitable for Benz keys with one battery type only.

Vehicle: Mercedes C200 2013

Xhorse VVDI Keyless Go Smart Key operates normally after registration.
But 3 days later
3V battery discharges.
I would like to ask for a solution because the discharge continues even after replacing the new 3V battery.

And the new Xhorse VVDI Benz FBS3 Smart Key PCB
Even if you check the registration, the symptoms are the same.

Confirmed using version upgrade and the symptoms are the same
Number 1 is ver:1.0.5
Number 2 is ver:1.1.4
* After 3 days, it will be discharged to 3V unconditionally.

Solution from Xhorse Engineer:


Due to the design flaws of a few battery shrapnels,pressing the button forcefully may cause a short circuiton the circuit board resulting in battery leakage.

To avoid this problem, it is recommended to put insulating tapeon the area shown in the figure below.


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