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Technical Service Bulletin
Topic

Front window one-touch open/close function inoperative - DTCs evident in 0042/0052

Market area

Bentley: worldwide (2WBE),China 796 VW Import Comp. Ltd (Vico), Beijing (6796)

Brand

Bentley

Transaction No. 2080489/1
Level

EH

Status

Released for publishing

Release date

Jan 20, 2026

Diagnostic trouble codes

Fault
symptom

Storage
state

Diagnostic address

Diagnostic trouble code

0052 - Passenger's door
electronics

B148754: Window regulator motor no basic
setting

static

0052 - Passenger's door
electronics

B148713: Window regulator motor Open
circuit

Intermittent

0042 - Driver's door electronics

B148754: Window regulator motor no basic
setting

static

0052 - Passenger's door
electronics

B148754: Window regulator motor no basic
setting

Intermittent

0052 - Passenger's door
electronics

B148713: Window regulator motor Open
circuit

static

0042 - Driver's door electronics

B148713: Window regulator motor Open
circuit

static

0042 - Driver's door electronics

B148713: Window regulator motor Open
circuit

Intermittent

0042 - Driver's door electronics

B148754: Window regulator motor no basic
setting

Intermittent

New customer code

Object of complaint

Complaint type

body attachments and installations -> door opening/closing, window
heating -> power window regulator

functionality -> cannot
be closed

body attachments and installations -> door opening/closing, window
heating -> power window regulator

functionality -> cannot
be opened

Vehicle data

Position

Bentayga Series 23MY - Onwards
Sales types

Type MY

Brand Designation Engine code Gearbox code Final drive code

4V1* 2023 E

*

*

*

4V1* 2024 E

*

*

*

4V1* 2025 E

*

*

*

4V1* 2026 E

*

*

*

ZV1* 2023 E

*

*

*

ZV1* 2024 E

*

*

*

ZV1* 2025 E

*

*

*

Documents
Document name
master.xml

Connection offline
Technical Service Bulletin
Front window one-touch open/close function inoperative - DTCs evident in 0042
/0052

Condition
Customer statement
Front window operation fails when using single press (one touch) close/open.
Workshop findings

Transaction No.: 2080489

/1
Release date: Jan 20, 2026

Customer findings verified in the workshop with the following DTC are stored in the driver’s door electronics
(diagnostic address 0042) and/or passenger door electronics (diagnostic address 0052):
•

B148754: Window regulator motor no basic setting (passive/sporadic) Symptom: 196660

And
•

B148713: Window regulator motor open circuit (passive/sporadic) Symptom:196661

Technical Background
The affected door control module intermittently loses its basic settings or experiences communication faults
with the window regulator motor. This prevents the one-touch open/close function from operating correctly.
The stored DTCs indicate that the module cannot maintain calibration or detect the motor reliably, resulting
in sporadic failures. Refer to the measure section for the required repair instructions.

Production Solution
Under Review

Service
CAUTION
For vehicles using a 48v system, please refer to "48v system — safety precautions" before working on this
system. → Rep. Gr. 27 On vehicles with a 48V system the 12V battery and the 48V battery support each
other, therefore the 48V system must be deactivated. Refer to "48v system — To activate and deactivate"
→ Rep. Gr. 27 The 48v system must only be activated and deactivated by suitably qualified personnel

NOTICE
Raise a full Technical DISS query to product support second level. Write the number of this TPI 2080489/*
in the field " workshop findings". Await response for approval of replacement of the affected door control
module.

For replacement of the affected front door control module with a new, approved part. Refer to the steps
below.
Removal
•

Disconnect the batteries.

Refer to "Battery - Disconnect and connect" . → ElsaPro Rep. Gr. 27

•

To access the affected front door control unit, Remove the relevant front door trim panel.

Refer to "Front door trim panel - To remove and fit" . → ElsaPro Rep. Gr. 70

•

Remove the affected front door control unit

Refer ‘’Front door control unit (J386, J387) – To remove and fit’ → ElsaPro Rep. Gr. 70

Installation
•

Installation is the reverse of removal procedure, noting the following.

•

Torque tighten all fixings.

•

Carry out a Guided Fault Find as instructed in "Diagnostic system — Guided fault finding/component
replacement" → ElsaPro Rep. Gr. 97

NOTICE
When renewing the Drivers front or Passenger front door control -J386/J387- , the ‘Replace’ test must be
completed.

Right click on 42 Door Electronics Drivers Side or 52 Door Electronics Passenger Side (whichever was
replaced).
– Open Guided functions
– Open Replace control module

Final Checks
•

Clear all stored DTCs and verify proper operation of the one-touch open/close function.

Warranty
Warranty type 110 or 910
Damage service number 64 38
Damage code 00 40
Front Door control unit remove and fit
Labour operation code 64 38 19 00
Time 30 TU
Battery earthing strap loosen and fasten
Labour operation code 97 85 09 00
Time 10 TU
GFF Guided Functions
Labour operation code 01 50 00 00
Time 10 TU

Required Parts and Tools

Always refer to ETKA parts catalogue

Part Number

Part Name

QTY

4M1-959-953-K

Front Door Control Unit

1 / as required