Service bulletin 48K8UPDATE

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	10249104
Published by NHTSA	2024-01-22
Manufacturer's number	48K8UPDATE
Manufacturer's date	2013-09-27
NHTSA component	STEERING:ELECTRIC POWER ASSIST SYSTEM; STEERING

NHTSA's summary

Power Steering Control Unit Software (NVLW)

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Steering, Power steering

Vehicles listed
AUDI A4	2012, 2013, 2014
AUDI A5	2012, 2013, 2014
AUDI A5 CABRIOLET	2012 to 2014
AUDI A6	2012, 2013, 2014
AUDI A7	2012, 2013, 2014
AUDI Q5	2012, 2013, 2014

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

Other bulletins for the same vehicles and component
A481336 2033044-	2017-11-17. Service bulletin. The customer states they have a comfort concern about the steering system. The steering works correctly but intermittently feels notchy. There is no loss of steering functionality. The concern may be more apparent in colder weather, and may improve with warmth or an ignition key cycle. No DTC is stored and no warning appears in the cluster. This PSS TSB applies only to the comfort concern described in the condition of this PSS TSB. Please refer to the attached Information and Q&A document for guidance when handling each case. A solution is in development and will be made available as soon as possible. The steering wheel is mechanically linked to the wheels of the vehicle, and there is no loss of steering functionality. Refer to the attached Information and Q&A document for guidance when handling each case.
A481335 2029622-	2017-11-17. Service bulletin. Supersedes Technical Service Bulletin Group 48 number 12-34 dated October 23, 2012. The yellow steering symbol is illuminated in the instrument cluster. DTC C10ACFO (steering end stops not programmed) is logged in the power steering control unit, J500 (44). The power steering control unit, J500 (44), expects to receive a VIN message over the data bus shortly after terminal 15 is turned on. If the VIN message is not received at the expected time, the power steering control unit assumes it has been installed in a new vehicle and discards the programmed end position values.
A481338 2033044-	2017-11-17. Service bulletin. Supersedes Technical Service Bulletin Group 48 number 13-36 dated February 21, 2013. The customer states they have a comfort concern about the steering system. The steering works correctly but intermittently feels notchy. There is no loss of steering functionality. The concern may be more apparent in colder weather, and may improve with warmth or an ignition key cycle. No DTC is stored and no warning appears in the cluster. This PSS TSB applies only to the comfort concern described in the condition of this PSS TSB. Please refer to the attached Information and Q&A document for guidance when handling each case. A solution is in development and will be made available as soon as possible.The steering wheel is mechanically linked to the wheels of the vehicle, and there is no loss of steering functionality. Refer to the attached Information and Q&A document for guidance when handling each case.
A481340 2033377-	2017-11-17. Service bulletin. Customer states the vertical adjustment of the steering column does not work or works intermittently. Concern may or may not be duplicated. Software issues causing sporadic failure of the power steering column vertical adjustment.
A481341 2033391-	2017-11-17. Service bulletin. Customer may report that a warning for electromechanical steering is displayed in the instrument cluster. There is no loss of steering control or functionality associated with these warnings. Issues with the hardware and software.
A971335 2033412-	2017-11-17. Service bulletin. Steering wheel lock does not work. Various warning lights are on. Steering feels stiffer than usual. The engine cannot be switched off. The ignition key cannot be removed. DTC with description "Brake control unit, no signal/communication" is present in several control units. DTC entry in ABS Control unit, J104 (03). One or more may be present. This condition does not result in any drivability concerns. The steering system is fully connected. This condition does not result in any drivability concerns. The steering system is fully connected. The insulation for the ABS wheel speed sensor is damaged in production. Over time, this can lead to corrosion on the wires and restricted functions with the ABS control module. Only the wires in the left bulkhead grommet are affected.
A481458 2035178-	2017-11-08. Service bulletin. Supersedes Technical Service Bulletin Group 48 number 13-53 dated September 10, 2013. On vehicles equipped with a manual transmission, a steering warning may briefly display in the instrument cluster when the engine is restarted after improper use of the clutch pedal. For example, the warning may appear when the engine is restarted after the clutch pedal has been released too quickly during low-RPM, low-speed parking lot maneuvers. symptom codes may be stored in the diagnostic log under the power steering control module. The vehicle system voltage drops when the starter motor is operating. Because the power steering control module has a parallel circuit with the starter motor (terminal 29), this normal voltage drop may set a symptom code within the scenario described in the Condition section of this bulletin.
Executive Servic	2017-10-27. Service bulletin. This document contains a fluid capacity chart as well as a chart that contains the parts and part numbers needed for service.
Executive Servic	2017-10-27. Service bulletin. This document contains a fluid capacity chart as well as a chart that contains the parts and part numbers needed for service.
Executive Servic	2017-10-27. Service bulletin. This document contains a fluid capacity chart as well as a chart that contains the parts and part numbers needed for service.