Gl500 2013 a couple of faults
error 1:
have changed the battery in both keys but it still says change key batteries.
error 2:
my car has a parking heater (webasto i think) the button has three small red LED lights but it can only turn on the one in the middle. when i bought the car almost 2 years ago it worked on all three levels.
I have changed both the large main battery and the small extra battery in the trunk 2 days ago.
is there a 3 battery for this parking heater? for showed inoperative battery low yesterday and showed the parking heater sign in the display
thank you






