Technical product information
Topic
Market
area
Brand
Transaction
No.
Level
Status
Release
date

Unable to run basic settings within the Adaptive suspension control unit (J775)
Australia E04 Bentley rest Asia and Australia (6E04),China 723 Volkswagen (Anhui) Automotive CO (6723),China 796 VW Import
Comp. Ltd (Vico), Beijing (6796),Germany E02 Bentley rest Europe (6E02),Japan E03 Bentley Japan (6E03),Korea, (South) E08
Bentley South Korea (6E08),United Arab Emirates E06 Bentley Middle East and Africa (6E06),United Kingdom E01 Bentley UK
(6E01),United States E05 Bentley USA and rest America (6E05)
Bentley
2055693/4
EH
Released for publishing
26-Sep-2023

Event memory entries
Diagnostic address
0074 - Chassis control
0074 - Chassis control
0074 - Chassis control
0074 - Chassis control
0074 - Chassis control
0074 - Chassis control
0074 - Chassis control
0074 - Chassis control

Event memory entry
Fault type Fault status
C1034F0: Left front level control system sensor Rebound stop detected
Intermittent
C1034F0: Left front level control system sensor Rebound stop detected
static
C1035F0: Right front level control sensor Rebound stop detected
Intermittent
C1035F0: Right front level control sensor Rebound stop detected
static
C10CD29: Level control system sensor Range/Performance
Intermittent
C10CD29: Level control system sensor Range/Performance
static
C1036F0: Left rear level control system sensor Rebound stop detected
Intermittent
C1036F0: Left rear level control system sensor Rebound stop detected
static

New customer code
Object of complaint
vehicle service -> vehicle diagnosis -> guided fault finding
running gear -> shock absorber/suspension control -> self-levelling suspension
adjustment
running gear -> adaptive suspension, pitch and roll compensation
running gear -> adaptive suspension, pitch and roll compensation

Vehicle data
Bentayga series
Sales types
Type
4V1*
4V1*
4V1*
4V1*
4V1*
4V1*
4V1*
4V1*
ZV1*
ZV1*

MY
2017
2018
2019
2020
2021
2022
2023
2024
2023
2024

Brand Designation Engine code Gearbox code Final drive code
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*

Documents
Document name
master.xml

INTERNAL

Complaint type
control units, services -> with event log
entry
functionality -> without function / defect
functionality
dimensional accuracy

Position

Technical product information
Unable to run basic settings within the Adaptive suspension control unit (J775)

Transaction No.: 2055693/4
Release date: 26-Sep-2023

Customer statement / workshop findings
Unable to run Basic setting (full process + rebound end stops) after a new adaptive air suspension control unit has been fitted or work has been
conducted on the suspension system which requires the Basic setting (full process + rebound end stops) procedure performing

Technical background
Referring to Figure 1, During the Basic setting (full process + rebound end stops) the routine can stop during the initial part of the procedure, in
particular at the stage shown in Figure 2, which is when the vehicle is raised to allow all four wheels to hang down to their full rebound position
Should this issue be evident and the Basic settings routine does not continue - Refer to the Measure section of this TPI

Figure 1

Figure 2

Production change
-

Measure
1) Navigate to address 74
- Select Guided functions
- Select Read measured values (Figure 3)

INTERNAL

Figure 3
2) When prompted search for IDE 07151 –
- When IDE 07151 is located - Select - Starting update
- Monitor the measured value results for each level control sensor (Figure 4)

Figure 4
- Compare the sensor measured results in Figure 4 against the correct tolerance bands shown in Figure 5
- Within the example shown, the left hand rear level control sensor is not in tolerance as the value is 72.06%

Figure 5
3) To allow the Basic setting (full process + rebound end stops) to be successfully completed the measured value results must all be within the
tolerance bands shown in Figure 5
•

Manually adjust the out of range level sensor by moving the sensor connecting arm whilst monitoring the values until the value falls within
the specified tolerance band

Referring to Figure 6, The correct tolerance should be achieved by moving the sensor arm (by hand within the parts natural
limits of movement) in the required direction until the tolerance band is within specification NOTE: The tolerance can be
achieved by using the recommended method
NOTE: For photographic purposes only the left hand rear sensor is shown in Figure 6

INTERNAL

Figure 6
DO NOT ATTEMPT TO ADJUST THE TOLERANCE BAND OF THE LEVEL SENSORS BY PRYING,BENDING OR
MANIPULATING THE SENSOR RODS BY THE USE OF FORCE
•

Once the required tolerance band criteria is met carry out the Basic setting (full process + rebound end stops) until completion

INTERNAL