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

Bentley Dynamic ride system fault within the DIP - DTC C129600 logged
Bentley: worldwide (2WBE),Hongkong-Macau (5HK)
Bentley
2054300/2
EH
Released for publishing
03-Jul-2020

Event memory entries
Diagnostic address

Event memory entry

00D4 - Sway stabilization 1
00D4 - Sway stabilization 1
00D5 - Sway stabilization 2
00D5 - Sway stabilization 2

C129600: Sway stabilization control module
C129600: Sway stabilization control module
C129600: Sway stabilization control module
C129600: Sway stabilization control module

Fault type Fault status
Intermittent
static
Intermittent
static

New customer code
Object of complaint

Complaint type

running gear -> adaptive suspension, pitch and roll compensation functionality
vehicle service -> vehicle diagnosis -> guided fault finding
control units, services -> with event log entry
running gear -> adaptive suspension, pitch and roll compensation component / consumables

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

MY
2017
2018
2019
2020
2021

Brand Designation Engine code
E
*
E
*
E
*
E
*
E
*

Documents
Document name
master.xml

Gearbox code
*
*
*
*
*

Final drive code
*
*
*
*
*

Position

Technical product information
Bentley Dynamic ride system fault within the DIP - DTC C129600 logged

Transaction No.: 2054300/2
Release date: 03-Jul-2020

Customer statement / workshop findings
Bentley Dynamic ride system fault (Figure 1) within the Drivers Information Panel (DIP) with DTC C129600 logged within the Front anti roll bar
control unit (Diagnostic address D4) and/or the Rear anti roll bar control unit (Diagnostic Address D5)

Figure 1

Technical background
Should the symptoms be evident as described, refer to the Measure section of this TPI, ensure both of the suggested earth points are checked
regardless if the DTC is logged in the front or rear anti roll bar control unit

Production change
Extra Quality checks are in place at the time of Production

Measure
This vehicle uses a 48v system, please refer to "48v system - safety precautions" before working on this system

The 48v system must only be activated and deactivated by suitably qualified personnel.

1) Ensure the 48v system is deactivated prior to starting any work on the 48v system. Refer to "48v system - to activate and deactivate".
2) Remove the right hand front wheel - Refer to Repair manual Rep.Gr 44
•

Remove the right hand front wheel arch liner - Refer to Repair manual Rep.Gr 66

•

Referring Figure 2 and Repair manual wiring diagrams locate earth point number 13

Figure 2
3) With care - Remove the earth point fixing - Carry out the following checks
•

Check for any paint/dirt residue on the actual earth point – Use suitable abrasive material to remove any paint or dirt

•

Check the earth cable terminal to ensure it is free from paint or dirt - Use suitable abrasive material to remove any paint or dirt

•

Refit the earth cable terminal and fixing nut

•

Torque the earth point fixing nut to 9 Nm

4) Referring to Repair manual Rep.Gr 27 - Gain access to the DcDc converter
IMPORTANT: Figure 3 shows the earth point ( 730) on 4/5 seat specification vehicles - Figure 4 shows the earth point location
( 53) for 7 seat specification vehicles
•

4 and 5 seat variants - Referring Figure 3 and the Repair manual wiring diagrams locate earth point number 730

Figure 3
•

7 seat variants - Referring Figure 4 - Locate earth point number 53 (Situated to the right hand side of the rear floor panel) to gain
access remove the rear bench assembly - 3rd row - Refer to Repair manual Rep.Gr 72 Rear bench seat assembly - 3rd row (7 seat) - to
remove and fi

Figure 4

All seat variants
5) With care - Remove the earth point fixing - Carry out the following checks
•

Check for any paint/dirt residue on the actual earth point - Use suitable abrasive material to remove any paint or dirt

•

Check all earth cable terminals to ensure they are free from paint or dirt - Use suitable abrasive material to remove any paint or dirt

•

Refit the earth cable terminals and fixing nut

•

Torque the earth point fixing nut to 3Nm + 45º

•

Erase DTC C129600 using a suitable diagnostic tool

•

Carry out a short road test

6) Confirm the DTC is no longer evident NOTE: Raise a DISS query if DTC C129600 is still evident

Warranty accounting instructions
Earth Point checks
Warranty type

110 or 910

Labour Operation Code

97 98 42 00 (Use 97 98 42 99 until 11/04/19)

Damage service number

97 98

Damage code

00 55

Time

70 Time units

Road test
Warranty type

110 or 910

Labour Operation Code

01 21 00 00

Damage service number

97 98

Damage code

00 55

Time

50 Time units