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Technical Service Bulletin

Transaction No.: 2062957/7

45-21-01 – Autonomous Emergency Braking (AEB) (U.S. Only)

Condition
Applicable Vehicles
Model(s)

Year

Eng. Code

Trans. Code

VIN Range From

VIN Range To

Golf, GTI

2020-2026

All

All

All

All

Jetta

2019-2026

All

All

All

All

Tiguan LWB

2018-2024

All

All

All

All

Atlas

2018-2026

All

All

All

All

Arteon

2019-2024

All

All

All

All

Atlas Cross Sport

2020-2026

All

All

All

All

ID.4

2021-2026

All

All

All

All

Taos

2022-2026

All

All

All

All

ID.Buzz, Tiguan

2025

All

All

All

All

Tiguan

2026

All

All

All

All

Revision Table
Instance Number

Published Date

Version Number

2062957/6

3/25/26

45-21-01

Update to model year applicability.

2062957/5

5/01/25

45-21-01

Update to model and model year
applicability.

2062957/4

12/18/22

45-21-01

Update to model year applicability.

2062957/3

7/21/22

45-21-01

Update to model year applicability.

2062957/1

7/22/21

45-21-01

Original publication.

Technical Background

Reason For Update

The customer reports that the vehicle performed an unwarranted Autonomous Emergency Braking (AEB).
Ensure that the customer is familiar with the various Driver Assist systems and the system limitations via the
owner’s manual and videos available at knowyourvw.com.
Review of the Self Study Programs (SSP 890253 –Driver Assistance Systems, SSP 860193 - Adaptive
Cruise Control and Lane Change Assist, and new model SSPs for specific Driver Assist information for that
model), is recommended before performing this TSB.
Participation in the instructor-led training 860292 - Volkswagen Driver Assistance Systems is recommended
before performing this TSB.

Production Solution
No current production solutions.

Service
1. Perform preliminary diagnosis
1a. Preliminary Inspection:
Prior to connecting a scan tool, perform the following checks:
•

Perform a vehicle walk around to check for signs of damage or misalignment from previous damage or
repair (i.e. bumpers, front grill, front VW emblem, windshield inc. interior mirror and sensor
mounting). Areas of concern should be inspected/repaired and system retested before continuation of
this Technical Bulletin.

•

Check the trailer hitch (on equipped vehicles) for signs of trailer or hitch carrier usage. Use of a trailer
or hitch carrier that does not connect to the vehicle electrical system can cause a change in vehicle
ride height. This change can cause a temporary misalignment of the front radar sensor.

•

Continue to step 1b.

1b. Scan tool diagnosis:
Connect the scan tool and scan the vehicle for any stored fault codes.
•

If any stored faults are found, follow the test plan and perform repairs as necessary. After repairing the
concern, retest the vehicle. If the concern persists, continue to step 2. If the issue is no longer present,
return the vehicle to the customer.

•

If no fault codes are stored continue to step 2.

2. Customer Questionnaire
Have the customer complete the attached questionnaire and use the information to determine which of the
below scenarios apply.
Customer Concern

System

Diagnostic Step

Occurs at low speed (<5mph)

Maneuver Braking

Follow GFF test plans for Park Distance Control
(PDC). This Technical Bulletin does not apply.

Occurs only in reverse

Back up Assist

Follow GFF test plans for Park Distance Control
(PDC). This Technical Bulletin does not apply.

Occurs only with the cruise
control engaged (ACC)

Adaptive Cruise
Control (ACC)

Follow GFF test plans for cruise control. This
Technical Bulletin does not apply.

Occurs at speed above 5mph

Front Assist

Continue to Step 3. Data Collection

NOTICE
The questionnaire must be filled out completely and in detail in order for accurate results in the next steps.

3. Data Collection:
Perform the test plan “Technical Product Information” in O.D.I.S. Service.
To locate the test plan:
•

Select self test -> Diagnostic capable system -> 0013 Distance control (ACC) -> Technical Product
Information.

•

Once the test plan is complete, save the GFF log to the desktop as an .html file.

Gather MVB information (via guided functions):
•

Select O.D.I.S. on the OBD screen.

•

Click on each module one at a time:
‒

AW 13 - Distance Control module/Adaptive Cruise Control
AW 8B - Distance Control Module 2/Adaptive Cruise Control 2 (where equipped)

‒

AW A5 - Front Sensors Driver Assistance System (where equipped)

‒

AW 17 – Instrument Cluster

•

Use the dropdown box just above the module list, select MVB and then green forward arrow.

•

Display all MVB information for that selected module.

•

On the right side menu of O.D.I.S., select "OBD Log".

•

Select "New">"Add">"Display".

•

Repeat for each of the modules available as above.

•

Data Collection: Upload all files to GFF paperless.

NOTICE
The data may be used only to provide the customers products and services they request; support their
vehicle, products and services; diagnose, repair and track service and quality issues; communicate with
them about their vehicle, products or services; install and configure changes and updates to their products
or services; comply with legal requirements; protect the safety, property or rights of Volkswagen and the
Volkswagen Group family of companies; owners, registered users, drivers, passengers or others; or
prevent and detect fraud or misuse of the vehicles, products or services.

4. Data Evaluation:
Open the saved log and select expand all so all tabs are open. Scroll through the log to locate the Test step:J
428pro information.
The data should appear similar to the following:

•

Ensure that the current vehicle date/time are correct under Control module data: -J285- Instrument
Cluster Control Module (take note for later use if incorrect and then set correctly)

•

Using the information under “Control module data:-J428- Control Module for Adaptive Cruise Control”
refer to the attached example and chart below:
Type of Trigger

Result

Next Steps

No triggers shown

No warning or
brake event
recorded

Only Advance warning trigger
(s) stored on event date(s)
given by customer

Only a pre-warning Refer customer to knowyourvw.com and owner’s
or warning given
manual for system operation and limitations. This
Technical Bulletin does not apply.

Automatic braking trigger(s)
stored on event date(s) given
by customer

Partial and-or full
braking event
recorded

Refer customer to knowyourvw.com and owner’s
manual for system operation and limitations.

Continue to Step 5.

5. Checking Misalignment Angle
•

Check for customer usage of hitch carriers or frequent travel with vehicle loaded (refer to customer
questionnaire) as this can affect the misalignment angle.

•

Check the MVB misalignment angle in AW13. Ensure the angle is within specification (-0.8° to +0.8°).
If outside the specifications, perform a calibration of the -J428- using vehicle appropriate test plan and
retest the system. Refer the customer to the Owner’s Manual and www.knowyourvw.com for an
explanation of the system operation and limitations.

•

If no issues are found with the misalignment angle and no evidence of vehicle hitch use is suspected
continue to Step 6.

6. Engineering Review
Necessary information for engineering review:
•

Obtain a photo of the Grill, Emblem, Bumper Cover, windshield mounted camera, and the back of the
Radar Sensor, which will show all printed detail on it.

•

Obtain photos of the -KX2- Instrument Cluster and of the Radio while the engine is running. The
photos should include the vehicle’s current time and date (with a clock next to it) as well as the
mileage.

•

A google maps printout (screenshot of aerial view and street view) of the location noted by the
customer with GPS coordinates visible (make sure the red flag on the map is located on the site noted
by the customer).

•

Open a TAC ticket and attach all information gathered: