S80 AWD V8-4.4L VIN 85 B8444S (2008)
Fuel Gauge: All Technical Service Bulletins
Instruments - Fuel Gauge Inaccuracy
NO: 23-30
DATE: 5-13-2008
MODEL:
All New S80 (124) AWD only, Model Year 2007-
All New XC70 (136), Model Year 2008-
SUBJECT:
Repair of Inaccurate Fuel Gauge by Rerouting Hoses in Tank
REFERENCE: VIDA
Note!
If using a printed version of this TNN, first check for the latest online version.
THIS TNN SUPERSEDES THE PREVIOUS 23-30 DATED 11-20-07. THE FUEL PUMP INSTALLATION INSTRUCTIONS HAVE BEEN
CLARIFIED. PLEASE UPDATE YOUR FILES.
Description:
There may be cases when the fuel gauge is inaccurate. It can be one of the following two scenarios; however, it typically will not be both scenarios on the
same vehicle:
a) After filling the tank, the fuel gauge rises to an indication of approximately 1/2 to 3/4 tank, but does not read "full", even though the tank has in
fact been filled.
b) As fuel is consumed, the fuel gauge drops normally until it reaches approximately 1/4, after which the indicated fuel level does not change.
In both the above cases, the vehicle operates normally, and no warning messages or DTC's are shown.
Note!
This TNN is not designed to provide diagnosis and repair information in cases of vehicle drivability or DTC's. In those cases, refer to the appropriate
section in VIDA.
Service:
The most likely cause for the situations described above is blockage of the sender float on the fuel pump (FP), by a hose or electrical cable inside the
tank. The service method below describes how to route the hoses and cables inside the tank so that the sender float is not blocked.
Note!
There is no need to replace the fuel pump or fuel tank when performing this repair. This method should also be used if the fuel pump and/or fuel tank
are replaced for any other reasons, for example, if the sender has an electrical fault.
Material
