Service

Technical Information

05/19

ENU

WKA5

2

WKA5 - Checking Fill Level Sensor for Water Spray System and Replacing it if Necessary
(Workshop Campaign)
Vehicle type:

911 GT2 RS (991)

Model Year:

2018

Subject:

Fill level sensor for water spray system

Information:

There is a possibility that the float for the water spray system fill level sensor can stick at both
the lowest and very top position due to unfavorable component tolerances on the affected
vehicles.
•

•

If the float sticks at the lowest position, the warning message "Fill coolant reservoir for charge-air
cooler - Visit workshop" will be displayed in the instrument cluster even though the reservoir for the
water spray system is still sufficiently full.
If the float sticks at the very top position, the reservoir will subsequently become empty and no
warning message will be displayed. As a result, engine power will be reduced and the pump can be
damaged.

Remedial
Action:

Check the date of production on the water spray system reservoir and replace the fill level sensor if
necessary.

Affected
Vehicles:

Only the vehicles assigned to the campaign (see also PCSS Vehicle Information). There are 684
vehicles affected in the US and Canada

AfterSales

Oct 22, 2019
Page 1 of 5

2

Service
WKA5

ENU

Technical Information

05/19

Installation
position:

Installation position of water spray system
1
2

– Water spray system reservoir
– Fill level sensor

Parts required
Parts Info:

No parts are required for checking the date of production.
Parts required for replacing the fill level sensor:
Part No.

Designation

Qty.

00004330474

 Sensor module

1 ea.

Required tools
Tools:

Oct 22, 2019
Page 2 of 5

•

Torque wrench, 2-10 Nm (1.5-7.5 ftlb.), e.g. V.A.G 1783 or equivalent - Torque wrench,
2-10 Nm (1.5-7.5 ftlb.)

AfterSales

Service

Technical Information

05/19

ENU

WKA5

2

Checking fill level sensor for water spray system and replacing it if necessary
1

Remove front luggage compartment trim panel  Workshop Manual '700519 Removing and
installing trim panel for front luggage compartment'.

2

Check date of production (DDMMYYYY) on the water spray system reservoir and compare it
with the table below  Reading off date of production.
The date of production is shown on the top of the reservoir.
Attach a verifiable photo that clearly shows the date of production to the warranty claim.

Reading off date of production
Date of production

Next steps

Date of production on reservoir
is 05092018 or later.

Fill level sensor does not have to be replaced.
– End of measure –
Continue with Step 4.

Date of production on reservoir
is 04092018 or earlier.

The fill level sensor must be replaced.
To do this, continue with Step 3.

AfterSales

Oct 22, 2019
Page 3 of 5

2

Service
WKA5

ENU

3

Technical Information

05/19

Replace fill level sensor.
3.1

Release and disconnect electric plug
connection  Disconnecting electric plug
connection -1- on the fill level sensor 
Disconnecting electric plug connection -2-.

Disconnecting electric plug connection
3.2

Unscrew fastening screws  Removing fill
level sensor -1- and remove fill level sensor
 Removing fill level sensor -2-.

3.3

Install new fill level sensor and secure it by
tightening the fastening screws.
Tightening torque 8 Nm (6ftlb.)

3.4

Connect and lock electric plug connection.

4

Install front luggage compartment trim panel 
Workshop Manual '700519 Removing and installing
trim panel for front luggage compartment'.

5

Enter the campaign in the Warranty and Maintenance
booklet.

Removing fill level sensor

Oct 22, 2019
Page 4 of 5

AfterSales

Service

Technical Information

05/19

WKA5

ENU

2

Warranty processing
Scope 1:

Checking date of production on the water spray system reservoir - The fill level sensor does not
have to be replaced.
Working time:
Checking fill level sensor
Includes:
Removing and installing trim panel for front luggage
compartment

Labor time: 41 TU

 Damage Code WKA5 066 000 1
Scope 2:

Checking date of production on the water spray system reservoir and replacing fill level
sensor.
Working time:
Replacing fill level sensor
Includes:
Removing and installing trim panel for front luggage
compartment
Checking date of production

Labor time: 46 TU

Parts required:
00004330474

Sensor module

1 ea.

 Damage Code WKA5 066 000 2

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.

© 2019 Porsche Cars North America, Inc.

AfterSales

Oct 22, 2019
Page 5 of 5