Technical Service Bulletin
Topic
Market area
Brand
Transaction No.
Level
Status
Release date

Bentayga W12 - Bentley dynamic ride system fault displayed in Driver Instrument Panel
Bentley: worldwide (2WBE),Hongkong-Macau (5HK)
Bentley
2051553/2
EH
Released for publishing
Sep 28, 2020

Diagnostic trouble codes
Fault
symptom

Storage
state

Diagnostic address

Diagnostic trouble code

0021 - Battery management
2
0021 - Battery management
2
0021 - Battery management
2
0021 - Battery management
2
0021 - Battery management
2
0021 - Battery management
2
0021 - Battery management
2
0021 - Battery management
2

P0A1F00: Battery Energy Control Module

Intermittent

P0A9E00: Hybrid/EV Battery Temperature Sensor "A" Circuit High

Intermittent

P0AC800: Hybrid/EV Battery Temperature Sensor "B" Circuit High

Intermittent

P0ECA00: Hybrid/EV Battery Temperature Sensor System - Multiple Sensor
Correlation

Intermittent

P0A1F00: Battery Energy Control Module

static

P0A9E00: Hybrid/EV Battery Temperature Sensor "A" Circuit High

static

P0AC800: Hybrid/EV Battery Temperature Sensor "B" Circuit High

static

P0ECA00: Hybrid/EV Battery Temperature Sensor System - Multiple Sensor
Correlation

static

New customer code
Object of complaint
chassis -> damping\suspension regulation -> roll compensation
chassis -> level control system, pitch and roll compensation
vehicle service -> vehicle diagnosis

Complaint type
Position
functionality -> no function
functionality
control modules, services

New workshop code
Object of complaint
Complaint type
Position
chassis -> operation, driving and brake regulation -> stabilizer bar decoupling control module functionality -> faulty

Vehicle data
Bentayga
Sales types
Type
MY Brand Designation Engine code Gearbox code Final drive code
4V14A9 2017 E
*
*
*
4V14A9 2018 E
*
*
*
Chassis numbers
Manufacturer Filler Type Filler MY Factory From To
Prod from Prod to
SJA
*
*
*
*
C
016647 021273

Documents
Document name
master.xml

Technical Service Bulletin
Bentayga W12 - Bentley dynamic ride system fault displayed in Driver Instrument Panel

Transaction No.: 2051553/2
Release date: Sep 28, 2020

Condition
Bentley dynamic ride system fault displayed in the Driver Instrument Panel.

Technical Background
Diagnostic Trouble Code/s (DTC’s) stored in the Battery Energy Control Module 2 (Super capacitor) The following DTC’s relating to Hybrid EV
Battery Temp Sensor system faults can be logged either individually or combined - P0A1F00 - P0A9E00 – P0AC800 - P0ECA00
The Super capacitor part number must be checked, should the part numbers be as shown below and the symptoms/DTC’s are
as previously described please carry out the instructions within the Measure section of this TPI
Should the part number be different from the numbers shown below and the symptoms and/or the DTC’s are not as previously
described – Please raise a DISS query
•

4M0.915.169.C

•

4M0.915.169.D

•

4M0.915.169.E

Following a successful update, the part number will change to 4M0.915.169.F with Software version 114

Production Solution
All VIN’s post SJAAF14V6JC021273 have the latest specification Super capacitor fitted

Service
1. Ensure a suitable battery charger is correctly connected to the vehicle electrical system for the duration of this procedure

Figure 1
2. Ensure the ignition key is located in the remote control key reader and switch on the ignition (see Figure 1)
3. Connect the Bentley approved diagnostic tool to the vehicle On Board Diagnostic (OBD) socket. NOTE: The process is Initiated via Bentley
diagnostic tool (VAS 6150C or similar) using a hard wire connection to the vehicle OBD socket, Bluetooth connections should not be used
Your Bentley diagnostic tester must be loaded with Bentley Brand Diagnostic Data Version 2.24.7 or higher
4. From the diagnostic tool main desktop select Off board Diagnostic Information System
5. Select – Start diagnosis
6. Select – Model / Engine
7. Select guided fault finding to check and clear the vehicle of any fault codes. NOTE: At this stage when requested to make a Target/Actual
comparison do not perform this action select NO

Figure 2
8. Referring to Figure 2, Select Special functions (1), Select SVM – Problem related Hardware/Software Update (2), Select Perform test (3)

Figure 3
9. Referring to Figure 3, at the SVM screen (1) enter the specific SVM code 4V021TPIUPDATE02 and then select Adopt (2)

10. Referring to Figure 4, Check you have entered the correct SVM code (1) and select Yes (2)
11. When prompted enter your global user ID and password
12. Follow the on screen prompts to continue through the procedure, identification data will be transferred
13. Once software that requires changing is detected select Done/Continue - Follow all onscreen prompts, the online connection will deliver the
required software to the tester

Figure 4
14. Select Yes at Update programming 21 to update 21 – Battery Energy Control Module 2 (see Figure 4 point 1)
15. During update a progress bar will be displayed
16. Once the battery energy control module 2 is updated an automatic SVM will take place

Figure 5
17. Select Done/Continue at successfully complete to finalise the update (see Figure 5)
18. Select Guided fault finding to check and clear the vehicle of any fault codes generated as a result of performing this campaign
•

Make a Target/Actual comparison - Follow all on screen prompts

Warranty
Software update only
Warranty Type
Labour Operation Code
Damage Service Number
Damage Code
Time

110 or 910
01 29 00 04
93 03
00 40
40 TU