Can someone tell me how I get to the fuel level sending unit in my C280. Do I have to drop the tank or is there a trap door.Thanks for any help.

There are 2. It is a saddle tank. There are doors that come off the bottom/forward section of each tank. Trying to remember, there is something special about the left side, I think that's where the fuel is collected to get drawn in by the pump. There also is a tube that connects the right and left sides so all the fuel can be used. It's a PITA system. Also I think the left side has the evap pressure sensor. You'll see 2 or 3 bolts holding the covers on.
Gilly

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Do I have to remove the tank?

No, not at all. Have to drain it though. Which there are special tools required to do. Not sure how the DIYer drains this tank. Also tools to pull out the senders.
Gilly

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Thanks for the info. I will figure out how to do the rest. I was just wondering about the removal.

How about drive around until it is empty!

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1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra

Hmmmm. Sounds crazy but it might just work!

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I have about 2 gals left in the tank.I'm just going to stick a hose down the filler and siphon it out.