Cayenne (9PA)

Technical Information

8/04

ENU

9436

9

Electrical Malfunctions Due To Sticking Brake Light Switch

Revision:

This bulletin replaces bulletin Group 9, 8/04, dated October 9, 2004.

Model Year:

As of 2003 up to 2004

Vehicle Type:

Cayenne/Cayenne S/Cayenne Turbo

Concerns:

Distance between brake light switch and lower dashboard cover is too small.

Information:

•
•

Lower dashboard cover is touching brake light switch,
brake light switch sticks or is mechanically damaged.

If the distance between the lower dashboard cover in the driver's footwell and the brake light switch is too
small, parts of the lower dashboard cover could press on the plug shoe of the brake light switch.
This can cause the brake light switch to stick or become mechanically damaged.
A further consequence could be that the brake light switch would malfunction, linked with the following
possible fault types:
•
•
•
•

The brake lights are permanently lit
Cruise control does not function at times
The PSM does not function
The vehicle will not start

In order to increase the distance between the lower dashboard cover and the brake light switch, thus
avoiding a malfunction of the brake light switch, a foam rubber strip must be affixed on the brake light
switch retainer as of the stated dates of introduction.
On vehicles produced before the stated dates of introduction, the foam rubber strip is to be affixed to the
brake light switch retainer whenever there is a customer complaint.
Date of
Introduction:

Parts Info:

May 10, 2004, as of the following VINs:
9P 14L A2 4128

Cayenne/USA

9P 14L A7 6579

Cayenne S/USA

9P 64L A9 4587

Cayenne Turbo/USA

 000.043.206.11

Foam strips, dimensions 100 x 8 x 8 mm/ 3.94 in x 0.31 in x 0.31 in

AfterSales

Jul 29, 2020
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9

Cayenne (9PA)
9436

ENU

Technical Information

8/04

Tools:

Torx wrench T15

Work
Procedure:

•
•

Checking the operation of the brake light switch.
Affixing a foam rubber strip to the brake light switch retainer.

1

Remove cover under the dashboard in the driver's footwell,  Workshop Manual '702219 Removing
and installing cover under dashboard'.

2

Check the operation of the brake light switch.
2.1

Switch on ignition.

2.2

Press brake pedal and check if the brake lights light up.

2.3

Take foot off of the brake pedal and check if the brake lights go out.
Switch off ignition after the function test.
( Brake light switch is intact, continue with Step 4.
( Brake light switch is faulty, continue with Step 3.

CAUTION
Insufficiently secured brake light switch after disassembly and reassembly


Only install brake light switch once.



Replace disassembled brake light switch with a new brake light switch.
3

Replace brake light switch ( Figure 1 -Arrow-), 
Workshop Manual '943619 Removing and installing
brake light switch'.

Figure 1

Jul 29, 2020
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AfterSales

Cayenne (9PA)

Technical Information
4

5

8/04

ENU

9436

9

Affix foam rubber strip to the brake light switch
retainer.
4.1

Pull protective film off the bonding area of the
foam rubber strip.

4.2

For left-hand drive vehicles, stick the foam
rubber strip left-aligned onto the surface
of the brake light switch retainer ( Figure 2
-Arrow-).

Install cover under the dashboard.
Figure 2

Working Time:

94 36 01 00

Checking brake light switch

This includes:

Removing and installing cover

40 TU

Sticking foam rubber strip to retainer
94 36 01 50

20 TU

Checking brake light switch
Composite work

This includes:

Removing and installing cover
Sticking foam rubber strip to retainer

References:

 Workshop Manual '702219 Removing and installing cover under dashboard'.
 Workshop Manual '943619 Removing and installing brake light switch'.

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.

© 2020 Porsche Cars North America, Inc.

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Jul 29, 2020
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