low fuel warning - not comng on
11-27-2010, 11:09 PM
#1
Newbie
Thread Starter
low fuel warning - not comng on
Hi,
I recently noticed that the low fuel warning message has failed to come on despite running on the reserve. The fuel gauge seems to be working and the distance left in the tanks seems realistic, I can find no other problems.
Any thoughts ?
alsie
2003 S350
( I did search the forum )
I recently noticed that the low fuel warning message has failed to come on despite running on the reserve. The fuel gauge seems to be working and the distance left in the tanks seems realistic, I can find no other problems.
Any thoughts ?
alsie
2003 S350
( I did search the forum )
11-28-2010, 07:59 PM
#2
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2005 S500 4-Matic, 1978 450SL
I cannot say for sure, but it is likely a problem with the fuel sending unit. It's not a good idea to run on low fuel in modern cars; they recirculate unused fuel back to the tank; when quantity is low, the fuel in the tank heats up. The fuel is used to col the fuel pump; with warm fuel, this doesn't happen and you fuel pump will wear out sooner.
