On my 91 190e I had that problem once in a bit of a blonde moment. Apparently the gas tank door is linked to the door locks. The doors on the car must be unlocked for the gas tank door to open. I hope your problem is as simple as this.
If Its Like the 1990 model, it doesn't have one. Simply open the car, and press the front end of the gas cover towards the front. That should do it.
I have a 87 260E and it has an 18 gallon tank and a reserve. they are the same chassis w124. and this info should be in your owners manuel
To remove the fuel tank from a 1988 Mercedes-Benz 190E, first ensure the vehicle is safely elevated and secure. Disconnect the negative battery terminal, then drain the fuel and disconnect the fuel lines from the tank. Remove the straps or bolts securing the tank to the chassis, and carefully lower the tank from its position. Lastly, ensure to disconnect any electrical connections, if applicable, before fully removing the tank.
dnt know
To fill the gas tank look for a cut out shape, let into the bodywork of the rear wing then push the front of this cut out shape with your fingers and it will hinge open to reveal a normal filler cap, which you then twist open and remove to refill the gas tank. John T
make sure the car is unlocked and manually open the tank door.
Press on the left side of door it will flip open.
Should be a 16 gal. I have a 1993 190e, and it has a 16 gal tank. By the way, there should be a sticker on the side of your filling door that says how big the tank is.
there isn't one you just push on it on the side closest to the door
Two pumps. Both are located under the car near the fuel tank. They are found under a removable cover. Hope this helps.
16 gallons