Join Date: Dec 2018
Vehicle: 2001 Mercedes Benz E320
Location: San Diego CA
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Try and igure this one out
Basic Info: 2001 Mercedes Benz E320, 159,000 miles
Ok guys I got a fun one.
About a month ago the light behind the gas gauge went out. Alone this did not seem like a big problem at the time.
A week ago, I go to drive the car at night and when I turn on the headlights, all the dash lights start flickering. This includes all the lights behind the gauges, the sos light, and even the lights on the window switches and center console. Thermostat flickers with the lights. The screen on the center of the instrument cluster also seems to be reseting. Radio and Headlights on the other hand, work fine and don't flicker.
The next day I go to drive it and the gas gauge is unresponsive. This is during the day so lights don't flicker but screen at center of the instrument cluster is reseting. I do some research and check the voltage using the thermostat which is no longer flickering. I get 12V normal and 13.5 with the engine running. Voltage changes when accelerator is pressed but does not exceed 13.6 and can drop to 13.3, fluctuates rapidly. A couple days go by, sometimes gas gauge turns on but more often does not. Impossible to check gas level because gas gauge is broken and odometer is electronic and part of screen in center of instrument cluster which repeatedly resets.
Today I go to drive the car and instrument cluster lights (including light behind gas gauge) are permanently on when car is on which is unusual because normally they only turn on when I turn the headlights on which are manual. Center console lights are off and do not even Also, screen at the center of instrument cluster has inverted lighting and is no longer reseting but is unresponsive to controls on steering wheel. Also, when driving I go to honk the horn and it is unresponsive, I try multiple times but nothing happens. When I get home I try disconnecting and reconnecting the battery no change in symptoms.
So thats the issue standing. Any suggestions??? I usually fix things myself but need to know where to start.