Re21/31 ESC Malfunction May Cause Loss of Vehicle Control – 2021 Bentley Bentayga

August 18, 2021 NHTSA CAMPAIGN NUMBER: 21V647000

ESC Malfunction May Cause Loss of Vehicle Control

A malfunctioning ESC system can cause a loss of vehicle control, increasing the risk of a crash.

 

NHTSA Campaign Number: 21V647

Manufacturer BentleyeBay logo Motors, Inc.

Components ELECTRONIC STABILITY CONTROL

Potential Number of Units Affected 28

 

Summary

BentleyeBay logo Motors, Inc. (BentleyeBay logo) is recalling certain 2021 Bentayga vehicles. Incorrect software for the chassis control module may cause the Electronic Stability Control (ESC) system to malfunction.

 

Remedy

Dealers will update the chassis control module with the correct software, free of charge. Owner notification letters were mailed on October 5, 2021. Owners may contact BentleyeBay logo customer service at 1-800-777-6923. BentleyeBay logo’s number for this recall is Re21/31.

 

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

 

Check for Bentley Recalls

 


RECALL CAMPAIGN – BentleyeBay logo Bentayga V8 Chassis Control Module update (RE21/29)

This letter is to initiate a recall campaign to update the software parameters of the Chassis Control Module on certain Bentayga V8 vehicles fitted with standard (passive) roll bars and manufactured in June 2021.

This letter will provide you with all of the information to explain why this recall is being initiated, the actions you are required to take and provide you with the appropriate administrative details.

As part of an internal testing programme, it was identified that incorrect software parameters have been released for the Chassis Control Module of certain customer vehicles.  The designated software parameters were intended for vehicles with active roll bars only, however, were also released onto vehicles fitted with standard (passive) roll bars.

Drivers of the vehicle may notice increased vehicle body movement and/or increased vehicle pitch under certain driving conditions.  During intense dynamic driving, such as evasive collision avoidance manoeuvres, where the vehicle is heavily loaded (e.g. fully laden boot or roof box), there is a risk of late Electronic Stability Control (ESC) intervention, which could result in a loss of vehicle control.

Attached is a BentleyeBay logo Technical Product Information (TPI) document, which lists the affected VINs and details the procedure which must be followed exactly. This software update is available now.

Every affected inventory vehicle must be REMEDIED BEFORE DELIVERY TO CONSUMERS. Therefore, please carry out following Stop Sale/Stop Delivery immediately.  

IMPORTANT REMINDER: VEHICLES AFFECTED BY SAFETY & COMPLIANCE RECALLS

IT IS A VIOLATION OF FEDERAL LAW FOR DEALERS TO DELIVER TO CUSTOMERS NEW VEHICLES IN THEIR INVENTORY AFFECTED BY THIS NOTIFICATION UNTIL THESE VEHICLES ARE REMEDIED.

DEALERS SHOULD NOT SELL, LEASE, RENT, OR LOAN ANY NEW OR USED VEHICLES IN DEALER INVENTORY AFFECTED BY THIS NOTIFICATION PRIOR TO REMEDY. DEALERS GROUNDING LEASE RETURNS SHOULD REMEDY ALL AFFECTED GROUNDED VEHICLES.

 

Ensure all relevant dealership personnel are aware of this notice so they are able to address customer questions. Contact your ASM if you require additional assistance. Please direct press inquiries to Erin Bronner at erin.bronner@bentleyeBay logo-usa.com.

 

Owners of affected cars will be notified in writing week beginning September 27th 2021

 

It is not necessary to contact us for authorisation.  We will take our records from your warranty claim which must be generated and submitted immediately upon completion of the work.  You are reminded that claims for recalls cannot contain any other warranty repairs.  The warranty code and repair time are quoted within the TPI.

 

It is to our mutual advantage that this recall campaign goes as smoothly as possible.  Should you have any questions or queries concerning this recall, please contact your Area Service Manager or myself.

 


 

Technical background

Incorrect software parameters have been released for the Chassis control module of certain vehicles. The designated software parameters were intended for vehicles with active roll bars only, however, this was also released onto vehicles fitted with standard (passive) roll bars.

 

Remedy

Latest specification software should be applied to address 74 – Chassis control module

 

Customer notification

Customers of affected vehicles will be notified in writing by their BentleyeBay logo retailer to arrange an appointment, make a note of the required action on the workshop order before it is signed by the customer

If it is omitted to perform the work required during a workshop visit, the customer should be notified immediately

You should also pass on this information to your new and used car sales departments so that affected vehicles are checked and repaired immediately

 

Genuine parts

Not applicable

 

Parts supply

Not applicable

 

Parts despatch control

Not applicable

 

Questions and answers

1) What is the specific issue with the affected vehicles?

The incorrect software parameters have been released for the Chassis Control Module of certain customer vehicles. The designated software parameters were intended for vehicles with active roll bars only, however, this was also released onto vehicles fitted with standard (passive) roll bars.

 

2) What repercussions does the fault have?

Drivers of the vehicle may notice increased vehicle body movement and/or increased vehicle pitch under certain driving conditions. During intense dynamic driving, such as evasive collision avoidance manoeuvres, where the vehicle is heavily loaded (e.g. fully laden boot or roof box), there is a risk of late Electronic Stability Control (ESC) intervention, which could result in a loss of vehicle control.

 

3) Which vehicles are affected?

21MY Bentayga V8 vehicles fitted with standard roll bars only and built between 9th and 29th June 2021.

 

4) Can customers continue to drive the cars?

Yes, they can continue to use the vehicle, however, we encourage customers to apply extra caution until the vehicle has been modified.

 

5) What is the fix?

BentleyeBay logo authorised retailers will update the Chassis Control Module with the correct software parameters. This procedure will be carried out free of charge and will take approximately thirty minutes.

 

6) Do I have to make an appointment?

Yes, that’s important. Please contact your retailer immediately.

 

Technical background

Incorrect software parameters have been released for the Chassis control module of certain vehicles. The designated software parameters were intended for vehicles with active roll bars only, however, this was also released onto vehicles fitted with standard (passive) roll bars.

 

Check

If the vehicle is not already listed as repaired in the “Repair history” (in Elsa Pro) refer to the Identification section and check for the yellow paint mark on the front anti roll bar (right hand side) as shown in the Identification section

Should neither be evident (“Repair history” or applicable paint mark) carry out the required work in accordance with these instructions

 

Genuine parts

Not applicable

 

Work

General information for the reprogramming:

  • The closed-circuit voltage of the vehicle must be at least 12.5 V during the reprogramming. Connect the battery of the vehicle to an external power supply. For further information see the Maintenance manual.
  • During the reprogramming switch off all unnecessary consumers (ventilation, seat heater, interior lights).
  • Because of the highest transmission stability we recommend the use of the diagnosis interface VAS 6154 (WiFi diagnostic tool) only in the USB operation or the cable-connected VAS 5055 for the reprogramming (updating) of control units. If these units are not available, the diagnosis interface VAS 5054 (A) can also be used in USB mode

 

The vehicle MUST be removed from Transport and Loading Mode before conducting this procedure

  1. Select and run Guided fault finding
  • Within the Special functions tab select SVM – Code Input
  • Select Perform test (Figure 1)

 

  1. On the next screen enter the SVM code 4V074ML01 and select Adopt (Figure 2).
  • Follow all on screen prompts
  • All control modules will now be interrogated.

 

  1. Once this is complete, a confirmation message will be evident confirming that the all actions have been completed successfully
  • Select Done/Continue
  • Follow on screen prompts until program end
  • Clear all DTC’s before conducting the remaining steps

 

  1. On completion of steps 1 through to 3, carry out the remaining instructions to completion:
  • Using ODIS – Carry out the test Axle Load Sequence Basic Settings test to completion. NOTE: This test can be found under Special Functions VERY IMPORTANT: ensure all instructions are strictly followed including all warnings/care points
  • On completion clear all DTCs

 

  1. After the update programming, gear selection will not be possible. To wake up the system a bus silence is required, carry out the following steps in the order stated below:
  • Switch off the ignition
  • Remove the diagnostic interface from the OBD port
  • Switch off and remove the battery charger from the vehicle
  • Close the bonnet and all doors then lock the vehicle
  • Wait 5 minutes so that the vehicle goes into bus silence
  • When 5 minutes has elapsed, unlock the vehicle and open the driver’s door
  • Switch on the ignition
  • Confirm that the gear selection is now possible

 

  1. Place a yellow paint mark on the front anti roll bar (right hand side) as shown in the Identification section

 

Identification

 

Repair instructions  Notes

 



1 Affected Product

Vehicle

MAKEMODELYEAR
BENTLEYeBay logoBENTAYGA2021

 


7 Associated Documents

Manufacturer Notices(to Dealers,etc) – Safety Bulletin re RECALL CAMPAIGN BentleyeBay logo Bentayga V8 Chassis Control Module update (RE21/29)

RCMN-21V647-6841.pdf 941.807KB

 


Recall Acknowledgement

RCAK-21V647-6460.pdf 645.16KB

 


Defect Notice 573 Report

RCLRPT-21V647-6399.PDF 215.517KB

 


ISSUED Owner Notification Letter(Part 577)

RCONL-21V647-9472.pdf 256.902KB

 


Recall Quarterly Report #1, 2021-4

RCLQRT-21V647-4057.PDF 211.141KB

 


Remedy Instructions and TSB

RCRIT-21V647-7425.pdf 340.493KB

 


Recall Quarterly Report #2, 2022-1

RCLQRT-21V647-1881.PDF 211.238KB

 


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