2069806/2
Service Bulletin Details
Public Details for: 2069806/2
Hvac refrigerant leakage suspected or reports of a damp/musty smell within the cabin - diagnosis guidelines. Customer statement / workshop findings: hvac not cooling / hvac cooling less than expected / hvac refrigerant leakage confirmed o
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Technical product information HVAC refrigerant leakage suspected Or reports of a damp/musty smell within the cabin - Diagnosis guidelines 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 2069806/2 No. Level EH Status Approval Release date New customer code Object of complaint air conditioning -> heating, cooling -> automatic A/C mode air conditioning -> heating, cooling -> manual A/C mode air conditioning -> cooling Complaint type Position functionality -> cannot be activated functionality -> without function / defect component / consumables New workshop code Object of complaint Complaint type Position air conditioning -> cooling -> evaporator leaks -> leaking front air conditioning -> cooling -> evaporator leaks -> leaking connection front Vehicle data All Models Sales types Type MY 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 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 INTERNAL * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Documents Document name master.xml attachment2069806.pdf hvacword.doc INTERNAL Technical product information HVAC refrigerant leakage suspected Or reports of a damp/musty smell within the cabin - Diagnosis guidelines Transaction No.: 2069806/2 Customer statement / workshop findings HVAC not cooling / HVAC cooling less than expected / HVAC refrigerant leakage confirmed Or The customer reports a damp/musty smell within the cabin Note: For this scenario please see the pre requisites below • Should no HVAC leak be evident and a damp/musty smell has been reported/identified the operative should first confirm that water is not leaking into the cabin please refer to all VIN applicable TPI’s particularly TPI 2062622/- • Should there be no water leaks evident, the operative should check the HVAC and body drains for blockages, in the event the drains are blocked the drains must be unblocked, once this has been completed the operative should confirm if the damp/musty smell is still evident Hint: Should the damp/musty smell still be evident after the drains have been cleaned and/or water leaks have been repaired, the operative should consider the smell could be related to accumulation of algae, fungus and/or mold on and around the evaporator, in this scenario the operative must raise a DISS query requesting permission to clean the HVAC system NOTICE NOTICE: In the event that HVAC cleaning products are required, these MUST be sourced locally. Before using the cleaner the operative must inform the customer of the product which will be used, a neutral fragrance cleaner should be used as the customer may not like the smell of the cleaner should a fragranced product be used Please ensure all supporting information is included within the DISS query when requesting permission to clean the HVAC system including clear photographs and/or videos showing the reported issue, should the required information not be supplied the warranty claim could be cancelled Note: The retailer can conduct the cleaning process or a local HVAC specialist may be used to conduct the cleaning process, however this would require permission via DISS before being conducted CAUTION Do Not replace the evaporator for this issue, if the issue is still evident after the HVAC system has been cleaned, the operative must raise a new DISS query or respond via the existing query NOTICE In the event that no HVAC leaks/issues were found and the damp/musty smell was evident resulting in the requirement to clean the HVAC system, this would not be covered by warranty and must be paid by the customer as this related to a maintenance issue and not a HVAC functionality issue Technical background CAUTION DO NOT UNDER ANY CIRCUMSTANCES INSTALL TRACER ADDITIVES INTO THE HVAC SYSTEM Before conducting any work on the HVAC system the operative MUST refer to the following within Rep.Gr 87 • Refrigeration system - Safety and general information It has been observed that some HVAC components have been incorrectly diagnosed and replaced, after the components were returned for inspection no faults were found CAUTION The leaks in these scenarios were repaired after component replacement however as the parts were not at fault the actual fix of the leak would have been resolved by replacing O-rings only NOTICE IMPORTANT NOTICE: Before proceeding the operative should check to confirm there are no VIN applicable HVAC/refrigerant leak related TPI’s for example TPI 2069806/- INTERNAL Workshop diagnosis based on the customer complaint could be as follows: • • HVAC is not cooling or the HVAC is not effective due to leakage of the refrigerant Refrigerant recovered from the system shows a low volume or no refrigerant at all • Leakage is suspected from the compressor as no other leakage source was found NOTICE please refer to the examples shown below (Figures 1,2 and 3) of leaks found on the HVAC compressor Figure 1 Figure 2 INTERNAL Figure 3 CAUTION CAUTION: In the event the HVAC sniffer tool traces a HVAC leak from any of the outlets (Figure 4) Figure 4 INTERNAL Or A complaint is received that refrigerant is evident within the cabin the operative MUST first ensure that a leak is not evident within the plenum chamber or around the centre console (Figures 5 and 6) as refrigerant could be leaking into the plenum chamber/cabin and recirculated back into the cabin as this could lead to misdiagnosis and/or incorrect part replacement Figure 5 Figure 6 In the event that leakage is suspected from the thermal expansion valve (TXV) the thermal expansion valve can be replaced when the HVAC unit is fitted within the car • The operative must first refer to the attached flow chart before proceeding with any diagnosis or parts replacement TIP: The attached document is for assistance in diagnosing the HVAC leak for issue relating to damp/musty smells within the cabin please refer to the Customer statement/Workshop findings section of this TPI • Before conducting any work on the HVAC system the operative MUST refer to the following within Rep.Gr 87 • Refrigeration system - Safety and general information • Refrigerant oil - Special instructions • Refrigeration system - To discharge and charge INTERNAL IMPORTANT TIP: When a HVAC line/connection has been opened the operative MUST always cap/bung the applicable port using a suitable cap/bung NOTICE The operative must always change the receiver drier if the air conditioning compressor has failed CAUTION In the event the evaporator or compressor is suspected to be at fault the operative must raise a Technical DISS query before conducting any further work ensuring the following is attached: • Photograph and video of the r efrigerant quantity and the actual leakage location Or In the event the evaporator or compressor is not suspected as being at fault and the issue can be successfully diagnosed and repaired, please raise a non technical DISS query stating the issue which was evident and how the issue was resolved Production change - Measure Refer to the Technical background section Warranty accounting instructions Time to conduct the initial checks within the Measure section Warranty Type 110 or 910 Damage Service Number 87 01 Damage Code 00 50 Labour operation code 87 01 01 20 (Use 99 index until 14/09/23) Time 50 TU In the event that any parts are required to be replaced please refer to the warranty accounting instructions with Elsa pro this is due to the numerous vehicle specification and symptom scenarios NOTICE In the event that no HVAC leaks/issues were found and the damp/musty smell was evident resulting in the requirement to clean the HVAC system, this would not be covered by warranty and must be paid by the customer as this related to a maintenance issue and not a HVAC functionality issue NOTICE Please ensure all supporting information is included within the DISS query including clear photographs and/or videos showing the reported issue, should the required information not be supplied the warranty claim in some cases could be cancelled NOTICE All HVAC related claims will be checked by the Warranty team, any claims which are not deemed as applicable will be cancelled – In the event that parts are replaced parts without the required attachments or the parts are found to be not at fault warranty claims will be liable for rejection Parts information Refer to the ETKA parts catalogue for any additional parts requirements NOTICE In the event that HVAC cleaning products are required, these MUST be sourced locally. Before using the cleaner the operative must inform the customer of the product which will be used, a neutral fragrance cleaner should be used as the customer may not like the smell of the cleaner should a fragranced product be used INTERNAL Take photographs/videos to showing a reduction or /no HVAC Refrigerant Confirm leakage source by HVAC sniffer tool or leak detection spray/Soapy water Leakage Suspected at Evaporator as not found in other part Leakage Other than Evaporator Source Replace affected part Confirm Evaporator Leakage Raise a Technical DISS Query requesting permission to replace the evaporator Yes Replace Evaporator INTERNAL Leakage present on Evaporator No Do not Replace Evaporator, continue with further diagnosis