2071239/1
Service Bulletin Details
Public Details for: 2071239/1
Coolant pump leaking (part number 07p 121 008c) - low coolant warning - engine overheating - dtc's evident. Customer statement / workshop findings one or a combination of the following is evident: - coolant leaking from the mechanical co
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Technical product information Coolant pump leaking (part number 07P 121 008C) - Low coolant warning - Engine overheating - DTC's evident Australia E04 Bentley rest Asia and Australia (6E04),China 796 VW Import Comp. Ltd (Vico), Beijing (6796),Germany E02 Bentley rest Europe (6E02),Japan E03 Bentley Japan (6E03),Korea, (South) E08 Bentley South Korea (6E08),United Arab Emirates E06 Bentley Middle East and Africa (6E06),United Kingdom E01 Bentley UK (6E01),United States E05 Bentley USA and rest America (6E05) Bentley Topic Market area Brand Transaction 2071239/1 No. Level EH Status Approval Release date New customer code Object of complaint engine -> cooling system engine -> cooling system -> coolant lighting system, signalling -> sound signals -> "coolant level" acoustic warning Complaint type Position leaks component / consumables -> too little functionality -> activates Vehicle data W12 Bentayga - New Continental GT/GTC - New Flying Spur Sales types Type 3S31AB 3S31BB 3S31BB 3S31BB 3S31BB 3S31BB 3S31BB 3S31EB 3S31EB 3S31EB 3S41BB 3S41BB 3S41BB 3S41BB 3S41BB 3S41BB 3S41EB 3S41EB 3S41EB 4V14A9 4V14A9 4V14A9 4V14A9 4V14A9 4V14A9 4V14A9 4V14G9 4V14G9 4V14G9 4V14G9 INTERNAL MY 2018 2018 2019 2020 2021 2022 2023 2021 2022 2023 2018 2019 2020 2021 2022 2023 2021 2022 2023 2017 2018 2019 2020 2021 2022 2023 2020 2021 2022 2023 Brand Designation Engine code Gearbox code Final drive code E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * E * * * ZG21BB ZG21BB ZG21BB ZG21BB ZG26BB 2020 2021 2022 2023 2023 E E E E E Documents Document name master.xml INTERNAL * * * * * * * * * * * * * * * Technical product information Coolant pump leaking (part number 07P 121 008C) - Low coolant warning - Engine overheating - DTC's evident Transaction No.: 2071239/1 Customer statement / workshop findings One or a combination of the following is evident: • Coolant leaking from the mechanical coolant pump • Coolant witness marks on the mechanical coolant pump although coolant is not leaking/dripping from the pump • Low coolant level warning displayed within the DIP Or • Engine overheating issues and/or DTC P218100: Cooling System Performance with symptom code 8113 or air in the coolant DTC’s (various) is evident, in this scenario the operative should also refer to TPI 2051893/- Technical background CAUTION This TPI is only applicable to vehicles which have a mechanical coolant pump with the part number of 07P 121 008C However In the event that a mechanical coolant pump with the part number of 07P 121 008B is fitted please refer to TPI 2071238/HINT: A borescope may have to be used when checking the part number of the mechanical coolant pump NOTICE NOTE TO PRODUCT SUPPORT: All confirmed C level coolant pump complaints MUST be second levelled to the Powertrain Senior Engineer for review, please wait for a response from the Powertrain Senior Engineer before responding to the retailer Production change - Measure 07P 121 008C mechanical coolant pump fitted 1) On receipt of the vehicle - Take a photograph of the coolant level within the coolant reservoir • Using ODIS check to confirm that no DTC’s are evident relating to low coolant or overheating issues in particular DTC P218100: Cooling System Performance with symptom code 8113 Or Air in the coolant DTC’s (See Customer statement/workshop findings section if DTC P218100: Cooling System Performance with symptom code 8113 or Air in the coolant DTC’s are evident • Save the current ODIS log • Take a photo of any coolant related warnings which are evident within the DIP • Take a photo of any suspected coolant leaks WARNING The next part of the process requires the coolant system to be pressure tested, the operative must ensure the instructions within Rep.Gr 19 are followed. The engine MUST BE cold before conducting the pressure test 2) Referring to Rep.Gr 19 - Pressure test the coolant system to confirm if a coolant leak is evident from the mechanical coolant pump NOTICE VERY IMPORTANT: In the event that a leak is evident on a C level mechanical coolant pump and coolant is leaking/dripping as a result of conducting the coolant pressure test - Record a clear video of the leak (whilst carrying out the pressure test) the video must then be uploaded to a new or existing DISS query • Refer to the video located within the Bentley Hub reference TPI 2071238/- the video shows an example of a coolant pump with no leak although a small coolant witness mark is evident (Figure 1) in this scenario the coolant witness mark should be cleaned off (using a suitable cleaning agent) to the condition shown in Figure 2 INTERNAL Figure 1 Figure 2 In the event that coolant is not leaking from the mechanical coolant pump whilst conducting the pressure test the operative must conduct Step 3 (road test) to confirm if a coolant leak is evident or not However If a coolant leak is evident whilst conducting the pressure test the operative must go directly to Step 4 3) Conduct a road test • On return conduct a visual check to confirm if the leak is evident or not • Should a leak not be evident, no further action is required TIP: In the event there are no visible coolant leaks from the mechanical coolant pump and the coolant level is to specification as per Rep.Gr 10 DO NOT replace the mechanical coolant pump (No further action is required) INTERNAL However • If a visible coolant leak is evident the operative should continue with the remaining instructions from Step 4 4) Referring to Figure 3 - Disconnect each vacuum hose with care from the Solenoid for coolant circuit N492 - visually monitor for any traces of coolant Figure 3 HINT: Refer to the video on the Bentley Hub referencing TPI 2071239/VERY IMPORTANT: If traces of coolant are evident during disconnection, take clear photos or record a clear video of any coolant within the vacuum hoses or N492 and attach to a new or existing technical DISS query Please note the quoted video should be used for reference purposes only as it may not show the same part which is fitted to the applicable vehicle (although the symptom is the same regardless of the type shown) • Use a Mityvac or similar vacuum tool to check and confirm there are no vacuum related issues/leaks present within the system to check and confirm if N492 is sticking open and supplying a constant vacuum 5) The operative must raise a technical DISS query or respond via an already open DISS query to request permission to replace the mechanical coolant pump ensuring the following is attached to the DISS query: • Clear photo of the coolant level • Clear photo of the original mechanical coolant pump part number 07P 121 008C (Figure 4) • Video of the coolant leak whilst carrying out the pressure test • Current ODIS log • Await feedback via DISS before replacing any parts NOTICE NOTE TO PRODUCT SUPPORT: All confirmed C level coolant pump complaints MUST be second levelled to the Powertrain Senior Engineer for review, please wait for a response from the Powertrain Senior Engineer before responding to the retailer NOTE: The photo shown in Figure 4 is a C level coolant pump (shown removed from the vehicle for photographic purposes) a borescope may have to be used for photographs of the coolant pump when fitted INTERNAL Figure 4 6) Once permission has been given via the technical DISS query, replace the following • Mechanical coolant pump - Rep.Gr 19 • Solenoid for coolant circuit N492 assembly - Rep.Gr 19 IMPORTANT: Ensure the vacuum hoses are free from moisture DO NOT use compressed air to attempt to remove moisture from the vacuum hoses (allow the moisture to naturally evaporate from the vacuum lines) as damage to other components and unintentional disconnection of vacuum hoses can occur if compressed air is used Ensure all procedures within the Repair manual are followed including any alignments/calibrations which are required (Depending on vehicle specification) NOTE: Do not discard the mechanical coolant pump (07P 121 008C or N492) as they may be requested for analysis 7) Conduct a road test to confirm the issue is no longer evident INTERNAL Warranty accounting instructions Warranty Type Damage Service Number Damage Code Coolant pressure test Labour Operation Code Time Diagnosis time Labour Operation Code Time Road test Labour Operation Code Time 110 or 910 19 50 00 50 19 01 01 00 10 TU 01 50 00 00 As per ODIS log (Must not exceed 30 TU) 01 21 00 00 50 TU Bentayga Time to replace the mechanical coolant pump and N492 assembly Labour Operation Code 19 50 19 51 Time 70 TU Time to remove and refit the front end module Labour Operation Code 50 38 19 00 Time 760 TU New Continental GT/C Time to replace the mechanical coolant pump and N492 assembly Labour Operation Code 19 50 19 01 Time 250 TU New Flying Spur Time to replace the mechanical coolant pump and N492 assembly Labour Operation Code 19 50 19 00 Time 210 TU Parts information Refer to the ETKA parts catalogue INTERNAL