Technical Service Bulletin

87-24-02 - ID.4 - Cleaning the Refrigerant Circuit R1234YF

Transaction No:

2073537/2

Release date:

12/9/2024

Condition
Applicable Vehicles
Model

Year

Eng. Code

Trans. Code

VIN Range
From

VIN Range To

ID.4

2021-2025

All

All

All

All

Revision Table
Instance Number

Published Date

Version Number

Reason For Update

2071473/2

12/9/24

87-24-02

Update to labor operation
number and update model
year applicability.

2071473/1

4/2/24

87-24-02

Original publication.

Debris can be dispersed throughout the refrigerant circuit after A/C component damage. In order to
maintain A/C operating efficiency, it is important to flush the refrigerant circuit after A/C component
repairs.

This bulletin must be read in its entirety before beginning repair.

Technical Background
In cases where an air conditioning system component (such as a compressor or other system
component) has failed and debris from the compressor or component is circulated throughout the
refrigerant circuit, the refrigerant circuit must be cleaned of any and all debris or damage to the
replacement components will result.

If the HV system is disabled, the cooling performance test cannot be performed, and separate
diagnosis is required. The HV AC compressor must have a GFF diagnosis log with completed
test plans of all compressor related faults before replacing the HV AC compressor.

Page 1 of 23
© 2024 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.

Technical Service Bulletin

87-24-02 - ID.4 - Cleaning the Refrigerant Circuit R1234YF

Transaction No:

2073537/2

Release date:

12/9/2024

Any replacement of A/C compressors-regardless of the reason for failure must complete the A/C
flush procedure to ensure the proper amount of oil is re-introduced into the refrigerant system.

Production Solution
No production change required.

Service
Tools
Use an approved R1234yf servicing
machine and the R1234yf Flush Kit
RTI360831840 (Figure 1).
Used for effective refrigerant handling
and air conditioning circuit flushing after
air conditioning component failure.

Figure 1. The VAS581005 Air Conditioning Service System
with Flushing Device.

Page 2 of 23
© 2024 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.

Technical Service Bulletin

87-24-02 - ID.4 - Cleaning the Refrigerant Circuit R1234YF

Transaction No:

2073537/2

Release date:

12/9/2024

The VAS 6338/1 Adapter Set for Refrigerant Circuits along with an additional adapter VAS
6338/38 for the expansion valve bypass this kit, contains the adapters necessary to complete a
thorough flush operation of a contaminated circuit. Elsa contains the technical information for
each model regarding the necessary adapter applications and connections of the servicing
station for the flush operation. See Heating, Ventilation & Air Conditioning >> Refrigerant
R1234yf-Servicing >> 00 General Technical Data>> Refrigerant Circuit removing contaminates>>
Refrigerant Circuit, Flushing with Refrigerant R1234yf in Elsa

Procedure
To access the expansion valve for removal you must remove the Heating Ventilation Unit.
Refer to Elsa Pro –Elsa2Go Heating, Ventilation & Air Conditioning 87 Air Conditioning Front Heater and
A/C Unit, R134a/R1234yf Heater and A/C Unit Air Intake Housing, Removing and Installing.

Deactivation of the HV battery is required. Perform the HV battery test plan in Guided Functions.
1. If an air conditioning component has been diagnosed as the root cause of the failure, and this particular
component has been verified to have released debris through the circuit, continue with the flush
procedure.
2. Switch the power to the servicing station ON and begin by recovering the refrigerant from the system
through the normal service fittings.

For all compressor replacements it is mandatory to flush the system of all oil in the system. The
replacement compressor comes with a full charge of oil for a complete A/C system.

During the entire process avoid interrupting the power to the station. The station’s internal
memory will keep a log of all operations and can conveniently be recalled and printed. If the
power is interrupted, the station will lose the memory of the refrigerant volume recovered.

Page 3 of 23
© 2024 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.

Technical Service Bulletin

87-24-02 - ID.4 - Cleaning the Refrigerant Circuit R1234YF

Transaction No:

2073537/2

Release date:

12/9/2024

3. Disconnect the service hoses from the AC service ports of the refrigerant circuit.
The VAS 6338/1 adapters will be used to bypass the following:
Compressor.
Expansion Valve.
The VAS 6338/80 adaptor will be used to bypass expansion valve 1 N636

The desiccant cartridge must be removed for the flushing process. After the flush procedure is
complete replace the receiver drier or drier cartridge. For ID.4 the front bumper does not need to
be removed as stated in the repair manual.

To access the Receiver Drier Cap perform the following steps below to remove the lock carrier.

For reinstallation torque specifications refer to Elsa Pro/Elsa2Go Body>50 Body Front>Lock
Carrier>Overview-Lock Carrier.

Page 4 of 23
© 2024 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.

Technical Service Bulletin

87-24-02 - ID.4 - Cleaning the Refrigerant Circuit R1234YF

Transaction No:

2073537/2

Release date:

12/9/2024

4. Remove the lock carrier brace.
Remove the front underbody trim panel.
Refer to ⇒ Body Exterior; Rep.
Gr.66 [Underbody Trim Panel; Front
Underbody Trim Panel, Removing and
Installing] .
Remove the bolts -1- from the lock carrier.
Remove the bolts -3-.
Remove the connecting piece -2downward.
(Figure 2)

Refer to ElsaPro/Elsa2Go - Body > 50
Body Front > Lock Carrier Brace >
Removing and Installing.

Figure 2. Lock carrier brace
5. Remove the impact member.
(Figure 3)

Refer to ElsaPro/Elsa2Go - Body >50
Body Front > Lock Carrier >Impact
member > Removing and Installing.

Figure 3

Page 5 of 23
© 2024 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.

Technical Service Bulletin

87-24-02 - ID.4 - Cleaning the Refrigerant Circuit R1234YF

Transaction No:

2073537/2

Release date:

12/9/2024

6. Support the hood using suitable tools and
equipment.
Release the coolant reservoir and set it
away from the lock carrier. (Figure 4)

Figure 4. Coolant reservoir set aside.

Page 6 of 23
© 2024 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.

Technical Service Bulletin

87-24-02 - ID.4 - Cleaning the Refrigerant Circuit R1234YF

Transaction No:

2073537/2

Release date:

12/9/2024

7. Disconnect the hood release cable and 2
pin hood switch connector F266. (Figure 5)

Refer to ElsaPro/Elsa2Go – Body >55
Hoods-Lids >Hood > Release Cable,
Removing and Installing.

Figure 5. Disconnect hood switch and hood cable.

Page 7 of 23
© 2024 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.

Technical Service Bulletin

87-24-02 - ID.4 - Cleaning the Refrigerant Circuit R1234YF

Transaction No:

2073537/2

Release date:

12/9/2024

8. Disconnect and set aside the washer
solvent filler neck. (Figure 6)

Figure 6. Set aside washer solvent filler neck.
9. Remove the radiator module bracket.
(Figure 7)

Figure 7. Remove radiator module bracket.
Page 8 of 23
© 2024 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.

Technical Service Bulletin

87-24-02 - ID.4 - Cleaning the Refrigerant Circuit R1234YF

Transaction No:

2073537/2

Release date:

12/9/2024

10. Perform the following steps below to
remove the lock carrier.
Remove the four bolts under bumper
cover.
(Figure 8)

Refer to ElsaPro/Elsa2Go – Body > 50
Body Front > Lock Carrier, Removing
and Installing.

Figure 8.
Page 9 of 23
© 2024 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.

Technical Service Bulletin

87-24-02 - ID.4 - Cleaning the Refrigerant Circuit R1234YF

Transaction No:

2073537/2

Release date:

12/9/2024

11. Perform the following steps below to
remove the lock carrier. (continued)
Remove the ten bolts from the lock
carrier.
(Figure 9)

Refer to ElsaPro/Elsa2Go – Body > 50
Body Front > Lock Carrier, Removing
and Installing.

Figure 9.

Page 10 of 23
© 2024 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.

Technical Service Bulletin

Transaction No:

2073537/2

Release date:

12/9/2024

87-24-02 - ID.4 - Cleaning the Refrigerant Circuit R1234YF

12. Perform the following steps below to
remove the lock carrier. (continued)
(Figure 10)

Pivot out the lock carrier -1- in the direction
of -arrow A- under the tab -9-.
-Remove the lock carrier -1- in the direction
of -arrow B-.

Refer to ElsaPro/Elsa2Go – Body > 50
Body Front > Lock Carrier, Removing
and Installing.

Figure 10. Lock carrier removal

Page 11 of 23
© 2024 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.

Technical Service Bulletin

87-24-02 - ID.4 - Cleaning the Refrigerant Circuit R1234YF

Transaction No:

2073537/2

Release date:

12/9/2024

13. Release the radiator fan module.
Disconnect the connector for the Radiator
Fan - VX57 - -arrow-.
Push in the left and right tabs -1- for the fan
shroud in the -direction of the arrow A-.
(Figure 11)

Refer to ElsaPro/Elsa2Go - Motor 19
Cooling System > Radiator/Radiator
Fan > Fan Shroud with Radiator Fan,
Removing and Installing.

Figure 11. Release the fan module
14. Lay the fan module away from the
condenser to access the condenser carrier
trim piece, (Figure 12)

Figure 12.
Page 12 of 23
© 2024 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.

Technical Service Bulletin

87-24-02 - ID.4 - Cleaning the Refrigerant Circuit R1234YF

Transaction No:

2073537/2

Release date:

12/9/2024

15. Access the receiver drier cap by gently
pulling back the condenser carrier trim.
(Figure 13)

Figure 13.

16. Remove condenser drier cap and remove
receiver drier cartridge.
(Figure 14)

Figure 14.
Page 13 of 23
© 2024 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the