Service bulletin TSB-90-10-20

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10035273
Published by NHTSA	2011-02-15
Manufacturer's number	TSB-90-10-20
Manufacturer's date	2010-08-25
NHTSA component	FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM

NHTSA's summary

AUDI: FUEL GAUGE DOES NOT REFLECT FUEL TANK IS FULL. THE FUEL GAUGE DOES NOT SHOW FULL EVEN THOUGH THE TANK IS COMPLETELY FILLED. THIS MAY OCCUR AFTER THE VEHICLE HAS BEEN TRANSPORTED BY A VEHICLE TRANSPORT TRUCK. THE LOWERED READING IS TRIGGERED WHEN THE VEHICLES ARE LOADED ONTO VEHICLE TRANSPORT TRUCKS OR WHEN PARKING ON AN INCLINE. THE VEHICLE IS TILTED, CAUSING THE FUEL LEVEL SENSOR VALUE TO CHANGE WITHOUT THERE BEING A SPEED SIGNAL IN THE INSTRUMENT CLUSTER. AS A RESULT, THE INSTRUMENT CLUSTER PERCEIVES A REFUELING PROCESS. *PE

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Fuel system

Vehicles listed
AUDI A4	2008, 2009
AUDI A5	2008, 2009
AUDI Q5	2009
AUDI S5	2008, 2009

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
2018635	2018-11-19. Fuel System
18V818000	2018-11-19. FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
16V660000	2016-09-13. FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
2016443	2016-09-09. Fuel System

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
0112562031368	2024-02-20. Service bulletin. Unnecessary High Pressure Fuel Pumps replacement due to Guided Fault Finding test plans not being performed or interrupted when the following DTC? s are present in the engine control module:
AWA1405	2024-01-22. Service bulletin. Due to new Minnesota state regulations regarding biofuels, biodiesel blends of B5 or less may not be available in the State of Minnesota.
Chart	2023-10-10. Service bulletin. Audi Oil Capacity Chart
A012341201475312	2023-03-06. Service bulletin. This bulletin contains instructions for when to add gasoline additives for cleaning the injectors.
01146220361693	2023-01-03. Service bulletin. In tank, fuel pump may be making a straining noise. Diesel fuel requires additive blending or ?winterization? to be useable at low temperatures. At temperatures below 20° F (-7° C), No. 2 Diesel with insufficient winterization blending may lose its fluidity due to wax separation. This may clog the fuel filter or in-tank filter, preventing the engine from operating properly. No. 2 Diesel is blended by refineries to various levels of winterization (minimum useable temperature) based on month, geographical location, and the 10th percentile minimum ambient air temperature for the given region. Although rare, during sudden periods of extreme low temperatures (record lows), fuel stations may not be adequately prepared with No. 2 Diesel fuel with sufficient winterization to resist wax formation or ?gelling?.
01145920361692	2023-01-03. Service bulletin. In tank, fuel pump may be making a straining noise. Diesel fuel requires additive blending or ?winterization? to be useable at low temperatures. At temperatures below 20° F (-7° C), No. 2 Diesel with insufficient winterization blending may lose its fluidity due to wax separation. This may clog the fuel filter or in-tank filter, preventing the engine from operating properly. No. 2 Diesel is blended by refineries to various levels of winterization (minimum useable temperature) based on month, geographical location, and the 10th percentile minimum ambient air temperature for the given region. Although rare, during sudden periods of extreme low temperatures (record lows), fuel stations may not be adequately prepared with No. 2 Diesel fuel with sufficient winterization to resist wax formation or ?gelling?.
01145520361691	2023-01-03. Service bulletin. In tank, fuel pump may be making a straining noise. Diesel fuel requires additive blending or ?winterization? to be useable at low temperatures. At temperatures below 20° F (-7° C), No. 2 Diesel with insufficient winterization blending may lose its fluidity due to wax separation. This may clog the fuel filter or in-tank filter, preventing the engine from operating properly. No. 2 Diesel is blended by refineries to various levels of winterization (minimum useable temperature) based on month, geographical location, and the 10th percentile minimum ambient air temperature for the given region. Although rare, during sudden periods of extreme low temperatures (record lows), fuel stations may not be adequately prepared with No. 2 Diesel fuel with sufficient winterization to resist wax formation or ?gelling?.
01140120273064	2023-01-03. Service bulletin. Assistance to properly diagnose a fuel pressure sensor -G247- concern
01130920147538	2023-01-03. Service bulletin. The use of contaminated gasoline or gasoline with a low content of deposit control additives may result in one or more conditions.
01146220361693	2022-10-31. Service bulletin. In tank, fuel pump may be making a straining noise. Diesel fuel requires additive blending or ?winterization? to be useable at low temperatures. At temperatures below 20° F (-7° C), No. 2 Diesel with insufficient winterization blending may lose its fluidity due to wax separation. This may clog the fuel filter or in-tank filter, preventing the engine from operating properly. No. 2 Diesel is blended by refineries to various levels of winterization (minimum useable temperature) based on month, geographical location, and the 10th percentile minimum ambient air temperature for the given region. Although rare, during sudden periods of extreme low temperatures (record lows), fuel stations may not be adequately prepared with No. 2 Diesel fuel with sufficient winterization to resist wax formation or ?gelling?.