Service

Technical Information

60/22

ENU

1955

Coolant Loss in the Body Front Section/Engine Compartment Area - Locate and Eliminate Cause of
Coolant Loss (60/22)

1

Change overview:
Release

Date

Change

0

05/27/2022

•

First publication

1

07/26/2024

•

Update of labor operation

2

03/18/2025

•

Update of Parts Information: PAC121043

Model Line:

Macan (95B)

Model Year:

As of 2014

Concerns:

Coolant leak on coolant regulator housing or coolant pump
Customer complaint:
•
•

"Fill coolant" warning message is displayed in the instrument cluster
Clear traces of coolant can be seen under the vehicle in the body front section/engine compartment
area

Workshop determination:
•
•

The leak can be clearly verified by means of a check
The cause of the coolant loss is clearly in the "coolant regulator housing" area or clearly in the "coolant
pump" area

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1

Service
1955

Information:

ENU

Technical Information

60/22

Avoid incorrect replacement of coolant regulator and/or coolant pump.
Technical background:
Clearly locate the coolant loss on the coolant regulator
Þ Parts drawing -1- or on the coolant pump ⇒
Þ
housing ⇒
Parts drawing -10-.

Parts drawing
Date of
Introduction:

•
•

Coolant regulator: as of vehicle production date March 8, 2019
Coolant pump: as of vehicle production date June 16, 2020

Action required:
Information
The coolant loss must clearly be in the coolant regulator housing area or in the coolant pump area.
Limit the exact leak. Check the cooling system for leaks according to ⇒ Workshop Manual '190101 Check
cooling system (R4)'.
Only repair the coolant regulator housing or the coolant pump in accordance with the following boundary
conditions:
•
•
•

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If other leaks or causes of complaints can be ruled out by the pressure and visual inspection in
accordance with the Workshop Manual
If a customer complains that there is a loss of coolant or the request to fill coolant is present in the
instrument cluster
If the coolant regulator housing or coolant pump is found to be the clear cause

AfterSales

Service

Technical Information
Work
Procedure:

60/22

ENU

1955

1

Information
If only slight traces of coolant (dry white deposits) are visible on the components and there is no specific
customer complaint,replacing components is generally not justified.
Example 1: Slight traces of coolant using the type of coolant
regulator without a leakage tank as an example ⇒ Slight
traces of coolant (old type of coolant regulator without a
leakage tank).

Slight traces of coolant (old type of coolant
regulator without a leakage tank)
Example 2: Slight traces of coolant using the type of coolant
regulator with a leakage tank as an example ⇒ Slight traces
of coolant (current type of coolant regulator with a leakage
tank).
Only replace the component causing the leak (coolant
pump or coolant regulator).
The specified repair depth of the cooling module must be
observed. If the coolant pump or coolant regulator is not
affected by a leak, this component must not be replaced
under warranty or goodwill.
Slight traces of coolant (current type of
coolant regulator with a leakage tank)

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Mar 18, 2025
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1

Service
1955

ENU

•

Technical Information

60/22

Example of a leak at the coolant regulator

In this example, there is a leak in the coolant regulator and
not in the coolant pump ⇒ Leaks at the coolant regulator
close to the leakage tank. Replace the coolant regulator
if the customer complains about it. ⇒ Workshop Manual
'195519 Remove and install coolant regulator housing (R4)'

•

Example of a leak at the coolant pump

Leaks at the coolant regulator
close to the leakage tank

Unambiguous loss of coolant at the coolant pump close to
the radial shaft seal ring ⇒ Leaks on the coolant pump close
to the radial shaft seal ring. There is a leak in the coolant
pump and not in the coolant regulator. Replace the coolant
pump if the customer complains. ⇒ Workshop Manual
'195019 Removing and install coolant pump (R4)'

Leaks on the coolant pump close
to the radial shaft seal ring

Required parts, materials and tools
Parts Info:

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Parts required for exchanging the coolant regulator:
Part No.

Designation
– Location

Number

PAC121111C

⇒ Coolant regulator
– Cooling system

1 piece

WHT004973

⇒ O-ring 18 x 3
– Coolant regulator

2 pieces

PAC121043

⇒ Moulded seal
– Coolant regulator

1 piece

AfterSales

Service

Technical Information

60/22

ENU

1955

1

Parts required for exchanging the coolant pump:

Materials:

Part No.

Designation
– Location

Number

PAC121012B

⇒ Coolant pump
– Cooling system

1 piece

PAC121043

⇒ Moulded seal
– Coolant pump

1 piece

Required materials (usually already available at the Porsche dealer):
Part No.
00004330516

Tool:

•
•
•
•

Designation
⇒ Coolant additive

Quantity
20-liter/ 5.28 gal
container (As much
as required)

9696 - 9696 - Filling device
V.A.G 1274/10 - Pipe for coolant tester
V.A.G 1274/8 - Adapter for cooling system tester
T10360 - T10360 - Socket tool, a/f 12

Invoicing
Please note that repairs (coolant regulator or coolant pump) must only be carried out as described in the
TI if there is clear documentation as shown in the sample illustrations and the corresponding workshop
findings.
If the application meets the comprehensible documentation criteria, this leads to quick and uncomplicated
processing and remuneration. In addition, comprehensible documentation reduces the error rate in a Porsche
Service Analysis.
For documentation and invoicing in the event of a guarantee, state the work items required depending on the
scope of work required and the specified PCSS encryption in the Warranty Claim:
APOS

Labor operation

I No.

19010100

Check cooling system

19501940

Remove and install coolant pump

19501910

Remove and install coolant pump

19551940

Remove and install coolant regulator housing

19551910

Remove and install coolant regulator housing

AfterSales

Mar 18, 2025
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1

Service
1955

ENU

Technical Information

60/22

PCSS encryption:
Location (FES5)

19550

Coolant regulator housing

Damage type (SA4)

5014

Coolant leak

References:

⇒ Workshop Manual '190101 Check cooling system (R4)'
⇒ Workshop Manual '195019 Removing and install coolant pump (R4)'
⇒ Workshop Manual '195519 Remove and install coolant regulator housing (R4)'

Important Notice: Technical Bulletins issued by Porsche Cars North America, Inc. are intended only for use by professional automotive technicians who have attended Porsche service training courses. They are
written to inform those technicians of conditions that may occur on some Porsche vehicles, or to provide information that could assist in the proper servicing of a vehicle. Porsche special tools may be necessary in
order to perform certain operations identified in these bulletins. Use of tools and procedures other than those Porsche recommends in these bulletins may be detrimental to the safe operation of your vehicle, and
may endanger the people working on it. Properly trained Porsche technicians have the equipment, tools, safety instructions, and know-how to do the job properly and safely. Part numbers listed in these bulletins
are for reference only. The work procedures updated electronically in the Porsche PIWIS diagnostic and testing device take precedence and, in the event of a discrepancy, the work procedures in the PIWIS Tester
are the ones that must be followed.

© 2025 Porsche Cars North America, Inc.

Mar 18, 2025
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