2055643-1

Technical product information
Topic
Market area
Brand
Transaction No.
Level
Status
Release date
Software incompatibilty between J775 (Address 74) - J924 (Address D4) and J1096 (Address D5)
Bentley: worldwide (2WBE),Hongkong-Macau (5HK)
Bentley
2055643/1
EH
Approval
New customer code
Object of complaint
Complaint type
running gear -> adaptive suspension, pitch and roll compensation
vehicle service -> vehicle diagnosis -> guided fault finding
running gear -> shock absorber/suspension control
running gear -> adaptive suspension, pitch and roll compensation
functionality
control units, services -> with event log entry
functionality
component / consumables
Vehicle data
Bentayga specified with the Active anti roll bar system
Sales types
Type
4V1*
4V1*
4V1*
4V1*
MY
2017
2018
2019
2020
Brand Designation Engine code Gearbox code
E
*
*
E
*
*
E
*
*
E
*
*
Documents
Document name
master.xml
Final drive code
*
*
*
*
Position
Technical product information
Software incompatibilty between J775 (Address 74) - J924 (Address D4) and J1096 (Address D5)
Transaction No.: 2055643/1
Customer statement / workshop findings
After replacing the software or hardware for the Adaptive suspension control unit (J775 – Diagnostic address 74) or the Front Roll stabilisation
control unit (J924 – Diagnostic address D4) and/or the Rear Roll stabilisation unit (J1096 – Diagnostic address D5) the software could be
incompatible between the control units
Technical background
The Adaptive air suspension control unit (J775) functions as a universal control unit for the chassis control systems.
The Adaptive air suspension control unit (J775) controls several functions in the car in particular the master for the active roll control system,
The control unit contains developed suspension and damping control software.
Should one of the modules be replaced for example (J775) on an early model vehicle the newer software contained within the replacement
control unit may not be compatible with (J924) and/or (J1096)
Production change
Not applicable
Measure
The compatibility of the Adaptive air suspension control unit (J775) - Front Roll stabilisation control unit (J924) and the Rear Roll stabilisation
control unit (J1096) should be checked and confirmed as follows:
Software version check
Referring to Figure 1 - Open the most recent ODIS log and navigate to address 0074
•
Check and confirm the software version number
•
NOTE: In this case the software version number is 1214
Figure 1
Referring to Figure 2 – Navigate to address 00D4
•
Check and confirm the software version number
•
NOTE: In this case the software version number is 0211
Figure 2
Referring to Figure 3 – Navigate to address 00D5
•
Check and confirm the software version number
•
NOTE: In this case the software version number is 0211
Figure 3
•
The operative should check and confirm software compatibility by referring to the onward combinations
•
NOTE: In the example shown the compatibility is incorrect as the software within (J775) is 1214 and the software within (J924) and (J1096)
is 0211 – all onward combinations shown are correct
Should the software version be different between (J924) and J1096) DTC C1296F1 – ‘Sway Stabilization Control Module –
Incompatible version’ may also be logged in D4 and/or D5
Combination 1
Control units
Compatible software versions
Adaptive air suspension control unit (J775) 1213 or 1214
Front Roll stabilisation control unit (J924)
0209
Rear Roll stabilisation control unit (J1096)
0209
Combination 2
Control units
Compatible software versions
Adaptive air suspension control unit (J775) 1214 or 1244
Front Roll stabilisation control unit (J924)
0111
Rear Roll stabilisation control unit (J1096)
0111
Combination 3
Control units
Compatible software versions
Adaptive air suspension control unit (J775) 1244 or 1245
Front Roll stabilisation control unit (J924)
0211
Rear Roll stabilisation control unit (J1096)
0211
Combination 4
Control units
Compatible software versions
Adaptive air suspension control unit (J775) 1245 or 1246
Front Roll stabilisation control unit (J924)
0113
Rear Roll stabilisation control unit (J1096)
0113
1) Should an incompatibility issue be found in one or a combination of control units, please raise a DISS query ensuring a current diagnostic log
is attached and all information is included regarding which control units are affected