SSM76104
Service Bulletin Details
Public Details for: SSM76104
No power steering assistance at start of drive cycle a?? Adas warning
- 2024 - 2023 - 2022 - 2021 - 2020 -
Models from 2024
2024 LAND ROVER DEFENDER |
2024 LAND ROVER DISCOVERY |
2024 LAND ROVER RANGE ROVER |
2024 LAND ROVER RANGE ROVER SPORT |
Models from 2023
2023 LAND ROVER DEFENDER |
2023 LAND ROVER DISCOVERY |
2023 LAND ROVER RANGE ROVER |
2023 LAND ROVER RANGE ROVER SPORT |
Models from 2021
2021 LAND ROVER DEFENDER |
2021 LAND ROVER DISCOVERY |
Models from 2020
2020 LAND ROVER DEFENDER |
Reference SSM76104 Models Defender / L663 Discovery / L462 New Range Rover / L460 New Range Rover Sport / L461 Title No Power Steering Assistance at Start of Drive Cycle – ADAS Warning / DTC U0400-81 Category Chassis Last modified 20-Oct-2023 00:00:00 Symptom 303000 Steering/Handling Content Model / Model Year / Derivative Range Rover / 22MY onwards / All Range Rover Sport / 23MY onwards / All Discovery / 21MY onwards / All Defender / 20MY onwards / All Situation: JLR Engineering investigations have had reports of no power steering assistance at the start of a drive cycle. Advanced Driver Assistance Systems (ADAS) warning message on the Instrument Panel (IP) and Diagnostic Trouble Code (DTC) U0400-81 is set on the Driver Assistance Domain Controller (DADC). Cause: Software error. Action: Follow the instruction(s) below. SERVICE INSTRUCTION: If the symptoms match those in the situation section, Do Not replace any parts before completing the following steps: 1. Run the Network Integrity Test (NIT) vehicle application. 2. Run the Power Steering Control Module (PSCM) data collection module application. 3. Complete the 12V battery reset procedure below: Disconnect and reconnect the 12V battery – (see TOPIx Workshop Manual section: 414-00 - BATTERY AND CHARGING SYSTEM - GENERAL INFORMATION - 12V SYSTEM DISCONNECT AND CONNECT). 4. Confirm that the customer reported fault is now resolved. If the vehicle fault is not resolved, continue diagnosis using TOPIx support. Note: A software update will be available in the future as a permanent repair. This SSM will be updated when software is available along with a TOPIx Workflow Test Plan available through ‘Fault and Breakdown -> Diagnose a Fault’. (Ref 000370222) anBhdHRlcnM7MjAyMy0xMS0wM1QxNDoxOTozMi4wMzdaOzEzNi4yMjYuNzQuMTA1Ow==