LEMON Manuals: Even more car manuals for everyone
Home >> Land Rover >> 2016 >> LR4 Base >> Repair and Diagnosis >> Quick Lookups >> Technical Bulletins >> Technical Service Bulletins >> Starter >> Auto Stop/Start System Not Functioning As Expected (LTB01261NAS2)

Auto Stop/Start System Not Functioning As Expected (LTB01261NAS2)

Publication date: 2019-03-06
Reference number: LTB01261NAS2
Supersedes refnos: LTB01261NAS1

AUTO STOP/START SYSTEM NOT FUNCTIONING AS EXPECTED

AUTO STOP/START SYSTEM NOT FUNCTIONING AS EXPECTED

TECHNICAL SERVICE BULLETIN

Reference Number(s): LTB01261NAS2, Date of Issue:  March 06, 2019
LAND ROVER: 2016-2018 Discovery Sport (LC); 2016 LR4 (LA); 2017 Discovery (LR); 2017-2018 Range Rover Evoque (LV); 2018 Range Rover Velar (LY); 2014 Range Rover Sport (LW); 2016-2017 Range Rover Sport (LW); 2014 Range Rover (LG); 2016-2017 Range Rover (LG)
SECTION: 414-00
AFFECTED VEHICLE RANGE: See The Chart Below

AFFECTED VEHICLE RANGE

G00576355

MARKETS

NORTH AMERICA

CONDITION SUMMARY

SITUATION: 

The Auto stop/start system may not function as expected.

CAUSE: 

This may be caused by a Gateway Module (GWM) software error.

ACTION: 

Should a customer express this concern, follow the appropriate Diagnostic Procedure below.

PARTS

No Parts Required

TOOLS

TOOLS INFORMATION

G12310347
 Jaguar Land Rover-approved battery power supply
G12310348
 Jaguar Land Rover-approved diagnostic equipment with latest SDD Software Management Pack
G12310349
 Jaguar Land Rover-approved diagnostic equipment with latest PATHFINDER software

WARRANTY

NOTE:
  • Repair procedures are under constant review, and therefore times are subject to change; those quoted here must be taken as guidance only. Use TOPIx to obtain the latest repair time.
  • The JLR claims submission system requires the use of causal part numbers. Labor only claims must show the causal part number with a quantity of zero.
WARRANTY INFORMATION

DESCRIPTION SRO TIME (HOURS) CONDITION CODE CAUSAL PART
Stop/start system - Healthcheck 86.90.89.74 0.2 04 LR073414
Gateway Module (GWM) configuration 86.90.97 0.2 04 LR073414
NOTE: Normal Warranty procedures apply.

DIAGNOSTIC PROCEDURE 'A'

This Diagnostic Procedure is only for vehicles requiring the Jaguar Land Rover-approved diagnostic equipment with Symptom Driven Diagnostics (SDD). 

CAUTION:
  • A Jaguar Land Rover-approved battery power supply must be connected to the vehicle startup battery.
  • All ignition ON/OFF requests MUST be performed; failure to do these steps may cause damage to vehicle control modules.
NOTE: Use the Jaguar Land Rover claims submission system for Field Service Action program eligibility requiring a Gateway Module (GWM) software update. If eligible, perform and claim the update as per that program using the latest SDD software.
  1. Connect the Jaguar Land Rover-approved battery power supply to the vehicle startup battery.
  2. NOTE: The Jaguar Land Rover-approved diagnostic equipment must be loaded with SDD156.00 Software Management Pack v312 (or later).

    Connect the Jaguar Land Rover-approved diagnostic equipment to the vehicle and begin a new session.

  3. Follow all on-screen instructions.
  4. NOTE:
    • Investigate and rectify any other auto stop/start inhibits other than the 'Estimated Cold Cranking Voltage at Present State of Charge'.

    Charging of the secondary battery by the Power Supply Distribution Box (PSDB) is controlled by the Body Control Module/Gateway Module (BCM/GWM) which runs checks to determine when this is required. When checking secondary battery voltage, it is acceptable for the voltage to be lower than that of the primary battery.
    The PSDB must not be replaced solely on the observation of differences or fluctuations between measured voltages seen at the primary and secondary batteries. Only replace the PSDB if a related DTC (Diagnostic Trouble Code) is present and if after working through the recommendations, this is required, or in the event of observed physical damage to the unit.

    If the hyperlink is not available:

    1. Select Diagnosis  from the Session Type screen.
    2. Select the Selected Symptoms  tab and the select:
      • Powertrain - Engine system - Starting system - Start-stop system - Inoperative  OR
      • Powertrain - Engine system - Starting system - Start-stop system - Intermittent operation 
    3. Select continue 
    4. Select the Recommendations  tab.
    5. Select Run  to perform the 'Powertrain - Stop/start system -Healthcheck'  option.
  5. If the hyperlink is not available:
    1. Select Diagnosis  from the Session Type screen.
    2. Select the Selected Symptoms  tab and the select:
      • Powertrain - Engine system - Starting system - Start-stop system - Inoperative  OR
      • Powertrain - Engine system - Starting system - Start-stop system - Intermittent operation 
    3. Run and close the Datalogger  tool to reveal the 'Extras'  tab.
    4. Select the Extras  tab.
    5. Select Run  to perform the 'Configure existing module - Gateway module'  option.
  6. Follow all on-screen instructions until the application completes successfully.
    1. When prompted, select the Clear DTCs  option following completion of the software download.
    2. Follow the on-screen instructions until the application finishes successfully.
  7. Exit the current session.
    1. Select the Session  tab.
    2. Select the Close Session  option.
  8. Disconnect the diagnostic equipment and battery power supply from the vehicle.

DIAGNOSTIC PROCEDURE 'B'

This Diagnostic Procedure is only for vehicles requiring the Jaguar Land Rover-approved diagnostic equipment with PATHFINDER. 

CAUTION:
  • A Jaguar Land Rover-approved battery power supply must be connected to the vehicle startup battery.
  • All ignition ON/OFF requests MUST be performed; failure to do these steps may cause damage to vehicle control modules.
NOTE: Use the Jaguar Land Rover claims submission system for Field Service Action program eligibility requiring a Gateway Module (GWM) software update. If eligible, perform and claim the update as per that program using the latest PATHFINDER software.
  1. Connect the Jaguar Land Rover-approved battery power supply to the vehicle startup battery.
  2. NOTE: The Jaguar Land Rover-approved diagnostic equipment must be loaded with PATHFINDER version 218 (or later).

    Connect the Jaguar Land Rover-approved diagnostic equipment to the vehicle and begin a new session.

  3. NOTE: The Jaguar Land Rover-approved diagnostic equipment will read the correct Vehicle Identification Number (VIN) for the current vehicle and automatically take the vehicle out of Transit mode (if required).

    Follow all on-screen instructions.

  4. Select Guided Diagnostics - Powertrain - Engine - Auto Stop-Start system. 
  5. Select Next. 
  6. NOTE: The Jaguar Land Rover-approved battery power supply must be disconnected before starting the engine.

    Follow the Stop Start healthcheck  on screen prompts.

  7. Exit the current session.
    1. If required, reset the vehicle to Transit mode. 
    2. Select the Exit  icon.
  8. Disconnect the diagnostic equipment and battery power supply from the vehicle.
scientia non olet · About LEMON Manuals