No. 128-20 Service Bulletin/Repair Instructions

Service
Technical Information
128/20 ENU
4301
4
Complaint - Problems with the Levelling System: Observe Specified Procedure (128/20)
Model Line:
Cayenne (9YA/9YB)
Model Year:
As of 2018
Equipment:
Air suspension with levelling system (I-no. 1BK)
Subject:
Levelling system
Information:
Problems with the air suspension (levelling system) on Cayenne vehicles. Remedial action and procedure.
Remedial

Action:
In the event of a customer complaint, perform fault finding and carry out the required repair measure.
Parts required if necessary

Parts Info:
Front spring strut

Part No.

9Y0616039C

9Y0616040C
PAF912603
N 10272202

N 10106402

N 10784702

WHT001987

9A700837900

N 10665001
Designation

– Use

 Air-spring strut

– front left

 Air-spring strut

– front right

Additional parts required
Qty.
 Hexagon-head bolt with

washer

– Front air-spring strut

 Hexagon-head bolt

– Front shock absorber fork

 Hexagon collar nut

– Front shock absorber fork

 Hexagon flange bolt

– Front shock absorber fork

 Hexagon nut

– Front shock absorber fork

 Tie-wrap

– Front shock absorber fork

 Countersunk screw with

internal serration

– Dome strut sound absorber
6 ea.
AfterSales
1 ea.

1 ea.
2 ea.

2 ea.

2 ea.

2 ea.

2 ea.

8 ea.
Sep 2, 2020

Page 1 of 15
4
Service

4301
ENU
Technical Information
128/20
WHT007061
 12 point socket (I-no. 1P0)

– Front connecting link

 Hexagon collar nut (I-no. 1P0)

– Front connecting link

or
2 ea.
 12 point socket (I-no. 1P7)

– Front connecting link

 Hexagon collar nut (I-no. 1P7)

– Front connecting link
2 ea.
Designation

– Use

 Level sensor with linkage

– front left

or
Qty.
PAB94128601
 Level sensor with linkage

– front right

Additional parts required
1 ea.
N 01508210
 Hexagon collar nut

Level sensor
2 ea.
Designation

– Use

 Level sensor

– rear left

or
Qty.
958941310H
 Level sensor

– rear right

Additional parts required
1 ea.
N 10684301
 Hexagon-head bolt

– Rear level sensor

 Hexagon collar nut

– Rear level sensor
1 ea.
Designation

– Use

 Compressor

– Rear axle
Qty.
N 10286110
WHT007422

PAF015081
2 ea.
2 ea.
Front level sensor

Part No.

PAB94128501
1 ea.
Rear level sensor

Part No.

958941309H
N 10508210
1 ea.
1 ea.
Compressor

Part No.

PAB616007
Sep 2, 2020

Page 2 of 15
AfterSales
1 ea.
Service
Technical Information
128/20 ENU
4301
4
Additional parts required

PAB907778
 Control unit for levelling

system

– Compressor
1 ea.
Designation

– Use

 Hexagon-head bolt

– Rear spring damper

 Hexagon collar nut

– Rear spring damper

 Hexagon-head bolt

– Rear spring damper

 Fixing clip for stone guard

– Rear axle

 Air spring bellows

– Rear axle, left

 Air spring bellows

– Rear axle, right
Qty.
Designation

– Use

 Spring damper

– rear

 Hexagon-head bolt

– Rear spring damper

 Hexagon collar nut

– Rear spring damper

 Hexagon-head bolt

– Rear spring damper

 Fixing clip for stone guard

– Rear axle
Qty.
Rear air spring bellows

Part No.

N 91236401

N 10106403

PAF912225

95851218200

9Y0616001B

9Y0616002B
2 ea.

2 ea.

4 ea.

4 ea.

1 ea.

1 ea.
Rear spring damper

Part No.

9Y0513021E

N 91236401

N 10106403

PAF912225

95851218200
2 ea.

2 ea.

2 ea.

4 ea.

4 ea.
Other parts of the levelling system (to be used if necessary)

Part No.

958616013A

958616203F
Designation

– Use

 Valve unit

– Rear axle

 Pressure accumulator

– Rear axle, left
AfterSales
Qty.

1 ea.

1 ea.
Sep 2, 2020

Page 3 of 15
4
Service

4301
ENU
1 ea.
9J1616640
 Pressure accumulator

– Rear axle, right

 Air distribution regulator

– Rear axle

 Solenoid valve block

– Rear axle

 Repair kit for air line (4X0.85)
9J1616640A
 Repair kit for air line (6X1.5)
1 ea.
958616715A
 Air line for pressure accumulator, lilac

– left

 Air line for pressure accumulator, lilac

– right

 Air line, red

– front left

 Air line, green

– front right

 Air line, black

– rear left

 Air line, blue

– rear right
1 ea.
958616204F

958616005G

958616013A
95861671500
9Y1616719

9Y1616720

9Y0616711A

9Y0616712A
Sep 2, 2020

Page 4 of 15
Technical Information
128/20
AfterSales
1 ea.

1 ea.

1 ea.
1 ea.
1 ea.

1 ea.

1 ea.

1 ea.
Service
Technical Information
128/20 ENU
4301
4
Component overview
1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18
–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–
Component overview

Body acceleration sensor, rear right

Shock absorber, rear right

Level sensor, rear right

Front right body acceleration sensor

Front right air spring with integrated shock absorber

Level sensor, front right

Level sensor, front left

Front left air spring with integrated shock absorber

Wheel acceleration sensor, front left

Control unit

Pressure accumulator, right

Pressure accumulator, left

Level sensor, rear left

Shock absorber, rear left

Wheel acceleration sensor, rear left

Rear left air spring

Solenoid valve block

Rear right air spring
AfterSales
Sep 2, 2020

Page 5 of 15
4
Service

4301
ENU
Technical Information
128/20
Work Procedure

Gradual loss of pressure

Symptom
Fault detection
Possible cause
Repair measure

Replace or repair air-spring

strut, see
 Workshop Manual '433019

Leak in air-spring strut

Gradual loss of pressure

– Vehicle lying to one

side after a long time

– Longer than average

regulating times

– No reaction to driver's

request
Check the levelling

system for pressure loss

and look for leaks using

commercially available

12 3

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