Steering/Starting/M/T System - P/S Warning In Cluster, DTC
48 Power steering warning in cluster, DTC for low starting voltage48 12 28
2029623/2
June 15, 2012.
Supersedes Technical Bulletin Group 48 number 12 - 26 dated May 21, 2012 for reasons listed below.
Affected Vehicles
Condition
On vehicles equipped with a manual transmission, a steering warning may briefly display in the instrument cluster when restarting the engine after improper clutch pedal use. For example, when restarting the engine after releasing the clutch pedal too quickly during low RPM, low speed parking lot maneuvers. The warning message quickly disappears and the vehicle operates properly.
^ A yellow steering symbol with message, "Steering fault. You can continue driving."
^ A red warning symbol with message, "Steering defective. Do not drive vehicle."
Technical Background
With the condition detailed above and the fault codes shown below, do not replace the steering gear. The problem is caused by a shortcoming of the diagnostic.
The vehicle system voltage drops when operating the starter motor. Due to the power steering control unit (J500) having a parallel circuit with the starter motor (terminal 29), this normal voltage drop may set a DTC within the scenario described in the Condition section.
44 power steering:
(FC 2305 restricted function because of low starting voltage).
-OR-
(FC 2306 restricted function because of low starting voltage).
Production Solution
A production solution is in development.
Service
A service solution is in development. Do not attempt any repairs at this time.
Please explain the technical background to the customer.
Warranty
This TSB is informational only and not applicable to any Audi warranty.
Additional Information
All parts and service references provided in this TSB are subject to change and/or removal. Always check with your Parts Department and service manuals for the latest information.