# Service bulletin TSB\-20\-11\-15

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.

- Type: Service bulletin
- NHTSA id: 10041667
- Published by NHTSA: 2011\-10\-24
- Manufacturer's number: TSB\-20\-11\-15
- Manufacturer's date: 2011\-09\-15
- NHTSA component: FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP; FUEL SYSTEM, OTHER:DELIVERY:FUEL PUMP

## NHTSA's summary

AUDI: GUIDELINES AND TIPS FOR FUEL PUMP ELECTRONICS DIAGNOSIS. \*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, Fuel pump

## Vehicles listed

- 2011 to 2012 AUDI A4 AVANT
- 2011 to 2012 AUDI A5
- 2011 to 2012 AUDI Q5
- 2011 AUDI S4
- 2011 to 2012 AUDI S5

## Recalls for the same vehicles and component

- [18V818000](/recalls/nhtsa/18V818000.md), 2018-11-19: FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
- [16V660000](/recalls/nhtsa/16V660000.md), 2016-09-13: FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

## Other bulletins for the same vehicles and component

- [A011455 2036169\-](/bulletins/10122176.md), 2017-11-08, Service bulletin: ENGINE; FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP. The MIL is on. DTC P0087 may be stored in the ECM. Drivability concerns such as hard starting/no starting are present. Outside temperature is sub\-freezing. 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?.
- [Dealer Letter \-](/bulletins/10120015.md), 2017-10-21, Service bulletin: FUEL SYSTEM, OTHER:DELIVERY:FUEL PUMP. This document contains general information on the upcoming warranty extension on the high pressure fuel pump.
- [TSB\-01\-11\-31](/bulletins/10042388.md), 2011-12-06, Service bulletin: FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP; FUEL SYSTEM, OTHER:DELIVERY:FUEL PUMP. AUDI: DUE TO RELATED ENGINE ELECTRONICS, THE CONTROL UNIT AND IN TANK FUEL PUMP REQUIRES DIAGNOSIS. \*PE

JSON: [/v1/bulletins/10041667](/v1/bulletins/10041667)

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