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WRG8 - Replacing Coolant Regulator (Workshop Campaign)

Vehicle Type:

Cayenne Turbo (9YA / 9YB) )

Model Year:

As of 2019 up to 2022

Concerns:

Coolant regulator

Cause:

The actual coolant temperature of the affected vehicles may deviate from the predicted
temperature curve during the engine warm-up phase due to a maladjustment of the
map-controlled coolant regulator.
If this is the case, the engine heats up with a delay and the Check Engine light (MIL) is consequently
activated.

Action:

Replace coolant regulator.

Affected
Vehicles:

Only vehicles assigned to the campaign (see also PCSS Vehicle Information).

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Installation
Position:

Installation position of coolant regulator

Required parts and materials
The part numbers of the required parts and materials for the respective vehicle can be seen in the
assigned scope. For an overview of the campaign scopes, see:  Technical Information 'Warranty
processing'.
For materials (lubricants) required for carrying out the action, see the corresponding Workshop Manual in
PCSS. These lubricants are usually available in the Porsche Center.

Required Tools
Tools:

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Battery charger with a current rating of at least 90 A, e.g., VAS 5908 - battery charger 90 A
P90999 - PIWIS Tester 4
Threaded bolts for installing wheel
Torque wrench, 2-10 Nm (1.5-7.5 ftlb.), e.g.V.A.G 1783 - torque wrench, 2-10 Nm (1.5-7.5
ftlb.)
Torque wrench, 6-50 Nm (4.5-37 ftlb.), e.g. V.A.G 1331A - torque wrench, 6-50 Nm (4.5-37
ftlb.)
Torque wrench, 40-200 Nm (30-148 ftlb.) e.g., V.A.G 1332A - torque wrench, 40-200 Nm
(30-148 ftlb.)

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Air conditioning servicing equipment for refrigerant R134a or R1234yf recommended
by Porsche (depending on the refrigerant used). For recommended service equipment, see the
Workshop Equipment and Special Tools Manual.
3094 - Hose clamp
9696 - Filling device
VAS 6096/2 - Vacuum pump
VAS 6890 - Spring band clamp pliers
T40357 - Pressure piece(s)
VW771 - Multi-purpose tool
VW771/37 - Extraction tool
VAS 6935 - Pole terminal puller
VAS 6826 - Steering wheel balance
9229/1 - Puller hook
T40183 - Insertion tool
VAS 6918 - Quick-clamping unit

Additionally required tools for vehicles with hybrid drive system PHEV (m. no. 0K3)
•
•
•
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T40262 - Locking cap
VAS 6410 - Contact surface cleaning set
VAS 6558A - High-voltage measuring module
VAS 6558/9–7 High-Voltage Test Adapter HVR 40
VAS 6883A - Insulated tool set

Additionally required tools for vehicles with LED headlights (m. no. 8IT / 8IS)
•

VAS 5208A - Headlights aiming device

or
•

VAS 5209B - Headlights aiming device

Additionally required tools for vehicles with LED MATRIX LED headlights (m. no. 8IU / 8JU /
8JT)
•

VAS 5208A - Headlights aiming device

or
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VAS 621 001 - Headlight adjusting unit

Additionally required tools for vehicles with automatic distance control (m. no 3V1 / 3V2 / 8T3
/ 8T8)
•
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VAS 6430/1A - Adjustment device with reflector
VAS 6430/3 - Mirrors for adjustment device

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Additionally required tools for vehicles with Night View Assist (m. no. KA6)
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VAS 6350A - Calibration unit

Additionally required tools for vehicles with Intersection Assist (m. no. JX1)
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VAS 6350/2A - Spacing laser
VAS 6350/4 - Calibration unit for Lane Change Assist

Additionally required tools for vehicles with Real Topview (m. no. KA6)
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VAS 721 001 - Calibration System

Replace coolant regulator
Work Procedure: 1

2

Replace previous coolant regulator with new coolant regulator.
For procedure, see:
 Workshop Manual '195819 Removing and installing coolant regulator (V8 biturbo)'
Attach Recall Proof of Completion label to the front lid (California Porsche Centers only).
Instructions for attaching labels
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•

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Surfaces on which you intend to attach the label must be clean, dry and free from grease and oil
residues.
Before attaching the label, clean the surfaces using a suitable cleaning agent and a clean,
grease-free and lint-free cloth.
This label must not be affixed over existing label.
Attach label only at the specified positions.

2.1

Fill out the Recall Proof of Completion label
 Recall Proof of Completion Label fully
and correctly. This includes the recall code
“WRG8”, your Porsche Center code and the
repair date.

2.2

Clean the surface in the lower area on the
front lid at the left-hand side in direction
of travel at which the Recall Proof of
Completion label must be attached  Proof
of Completion Label: specified position
(Exemplary illustration ) -arrow- using
a suitable cleaning agent and a clean,
grease-free and lint-free cloth.

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2.3

Affix Recall Proof of Completion label in the
lower area of the front lid at the lefthand side
in direction of travel  Proof of Completion
Label: specified position (Exemplary illustration ) -arrow-.

2.4

Close front lid.

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Enter the campaign in the Warranty and Maintenance
logbook.

Proof of Completion Label: specified
position (Exemplary illustration )

Warranty processing
Information
The specified labor time was determined specifically for carrying out this campaign and include all
necessary preliminary and subsequent rework. The labor time may differ from the labor time published in
the Labor Operation List in PCSS.

For all scopes:
(California
Porsche
Centers only)

Attach Recall Proof of Completion label and provide signed proof of correction to customer (California
Porsche Centers only)
Required parts:
PNA EMI 000 00

Label
– Recall Proof of
Completion

1 ea.

PNA 999 100 235

Certificate
- Recall Proof of
Correction

1 ea.

* California Porsche Centers only:
•
•

Scope 1 to
Scope 9:

For warranty processing, enter the Part No. PNA EMI 000 00 with the designation "label" as a
local part at US$ 0.34 in the warranty claim.
For warranty processing, enter the Part No. PNA 999 100 235 with the designation "certificate"
as a local part at US$ 0.01 in the warranty claim.

Not relevant for this vehicle type.

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Scope 10:

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Replace coolant regulator
Applies to Cayenne Turbo with the following equipment:
with automatic distance control ACC (m. no. 3V1 / 3V2 / 8T3 / 8T8)
with Real Topview (m. no. KA6)
with Intersection Assist (m. no. JX1)
with Night View Assist (m. nr. KA6)

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Labor time:
Replace coolant regulator
Includes:
Measuring vehicle front and rear
Adjusting distance measuring sensor control unit
Programming Surround View camera control unit
Programming infrared camera
Programming front corner radar control unit
Replace coolant regulator

Labor time: 940 TU

Required parts:
Part No.

Designation
– Location

Quantity

V04015004BS

Thermostat
- Coolant regulator housing

1 piece

9A712168800

Sealing ring
- Coolant regulator housing

1 piece

Additional parts required for vehicles with Porsche Dynamic Chassis Control PDCC (m. no.
1P7)
PAF00072900

M8 x 20 hexagon socket head bolt
– Front underbody cover

3 pieces

Additional parts required for vehicles with engine protective plate (M-No. 1SF)
N 10082912

Hexagon flange bolt (combination), M6 x 16
– Engine under underbody protection plate

3 pieces

9A791194602

Cheese head screw M8 x 20
– Engine under underbody protection plate

5 pieces

Required materials (usually already available in the Porsche Center):
V04015003P

Coolant additive, 20-liter/ 5.28 gal container

0.03 pieces

WRG80000001

Refrigerant oil SP-A2 (250 ml/ 8.45 fl oz container)

1 piece

WRG80000002

Refrigerant R134a

1 piece

1)

2)

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or
WRG80000003
3)

1 piece

Refrigerant R1234yf

1) For warranty processing, enter the corresponding part number with the designation ‘Refrigerant

SP-A2’ as an external component in the warranty claim; maximum cost: $6.60
2) For warranty processing, enter the corresponding part number with the designation ‘Refrigerant

R134a’ as an external component in the warranty claim; maximum cost: $5.50
3) For warranty processing, enter the corresponding part number with the designation ‘Refrigerant

R1234yf’ as an external component in the warranty claim; maximum cost: $16.50
 Damage number WRG8 066 000 2
Scope 11:

Replace coolant regulator