Method 1
Switch on ignition to position 1
Select maintenance indicator within 4 sec. by double tapping the instrument cluster button
Switch off the ignition to position 0 (off) within 10 sec.
Push and hold in the instrument cluster button and switch ignition on
Hold the instrument cluster button for another 10 sec
In that time, the spanner symbol on the LCD will flash and eventually reset
Method 2
Switch on the ignition to position 1
Select maintenance indicator within 4 sec by double tapping the instrument cluster button, keep it held down on the second press.
Switch off the ignition to position 0 (off) within 10 sec
Switch ingnition on
Keep the instrument cluster button held down for another 10 sec.
In that time, the spanner symbol on the LCD will flash and eventually reset.
PS Got This from SteveM1tx, it does work!!! Hope it helps
p1nball