2021 Mercedes-Benz S-Class Update Passenger Seat Occupant Recognition System

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October 11, 2021 NHTSA CAMPAIGN NUMBER: 21V789000

Deactivated Front Passenger Air Bag

A deactivated passenger air bag increases the risk of injury during a crash.

 

NHTSA Campaign Number: 21V789

Manufacturer Mercedes-Benz USA, LLC

Components AIR BAGS

Potential Number of Units Affected 1,311

 

Summary

Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2021 S500, S580, and Maybach S580 vehicles. The air bag control unit software may deactivate the occupant recognition control unit, resulting in a deactivated front passenger air bag.

 

Remedy

Dealers will update the air bag control unit software, free of charge. Owner notification letters were mailed December 1, 2021. MBUSA’s number for this recall is 2021100010. Owners may contact MBUSA customer service at 1-800-367-6372.

 

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 if your Mercedes-Benz has a Recall

 


This is to notify you of a new Recall Campaign to update the passenger seat occupant recognition system on 1,311 Model Year (“MY”) 2021 223 (S-Class) vehicles.  The recall campaign will be visible on the www.safercar.gov website and may generate questions from customers.

Affected VINs will be flagged in VMI as “PENDING” on October 18, 2021.

 

Issue

Mercedes-Benz AG (“MBAG”) has determined that on certain Model Year (“MY”) 2021 S-Class (223 platform) vehicles, the airbag control unit software might not meet specifications. The control unit for the occupant recognition might be deactivated permanently by the airbag control unit upon vehicle shut-down. As a consequence, the passenger airbag might be deactivated despite an occupant sitting on the front passenger seat. This could increase the risk of injuries for the passenger in the event of a crash with a potential airbag deployment.

 

What We’re Doing

MBUSA will conduct a voluntary recall. An authorized Mercedes-Benz dealer will update the airbag control unit software on the affected vehicles.

 

Parts

The remedy is available and can be performed.

 

Customer Notification Timeline

Customer letters will be mailed on 11/29/2021.

 


Update Passenger Seat Occupant Recognition System 

Model 223

  • Ensure use of XENTRY Diagnosis version BD/DVD (06/2021) or higher.
  • Before starting the work procedure, install the current version of all add-ons in XENTRY Diagnosis.
  • Make sure to follow the operation steps exactly as described in XENTRY Diagnosis.
  • Use a charger to ensure sufficient power supply of the vehicle on-board electrical system battery (greater than 12.5 V).
  • If XENTRY Diagnosis is already connected to the vehicle, start with operation step 2.

If two or more software updates or SCN codings are performed during one workshop  visit, operation items 02-4762 and 02-5058 may be invoiced only once for each workshop order.

 

Work Procedure

 

  1. Connect XENTRY Diagnosis.

 

  1. Update N2/5 Supplemental Restraint System (SRS) control unit software.

To do this, select menu item “Quick test view – N2/5 Supplemental Restraint System (SRS) – Adaptations –

Configuration – Manual settings – Check of control unit software

  • Action 0500 2021 0047 model 223 from SOP (except code 802)
  • Action 0500 2021 0225 model 223 (with code 802)

Then follow the user guidance in XENTRY Diagnosis.

 

Disconnect XENTRY Diagnosis.

 


Chronology :

In November 2020, MBAG began to investigate reports from a manufacturing plant that on certain new S-Class vehicles, SRS warnings were displayed in the instrument cluster, indicating a potential airbag malfunction.

MBAG’s analysis initially identified a software issue that could lead to a warning light regarding the SRS. In January 2021, MBAG released a plant action to rework affected vehicles in the production plant and in vehicle preparation centers.

During this process, MBAG’s analyses found a further potential deviation of internal specifications that appeared to be associated with the new software remedy. In March 2021, MBAG identified additional vehicles potentially affected by the software deviations, and initiated plant actions to rework them. Further investigations from April through May 2021 analyzed potential causes of the two software deviations and their possible effects.

MBAG’s continuing investigation ultimately determined that the second suspected software deviation does not have any impact on vehicle safety regulations and specifications and therefore did not require a fix.

Accordingly, in August 2021, MBAG re-focused its analysis on the previously identified SRS warning. MB’s further review determined that the same software error that caused the SRS warning also could permanently deactivate the occupant recognition control unit for the front passenger seat.

MBAG completed its investigation in late September 2021. Based on that investigation, MBAG concluded that a potential safety risk could not be ruled out. Accordingly, on October 1, 2021, MBAG decided to conduct a recall of potentially affected vehicles.

 


2 Affected Products

Vehicles

MAKE MODEL YEAR
MERCEDES-BENZ S500 2021
MERCEDES-BENZ S580 2021

 


11 Associated Documents

Defect Notice 573 Report

RCLRPT-21V789-6584.PDF 216.846KB

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Recall Acknowledgement

RCAK-21V789-1516.pdf 645.806KB

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Recall Quarterly Report #1, 2021-4

RCLQRT-21V789-6443.PDF 211.129KB

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Remedy Instructions and TSB

RCRIT-21V789-5271.pdf 304.78KB

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Manufacturer Notices(to Dealers,etc) – Update Passenger Seat Occupant Recognition System MY21 S-Class (223 platform): November 12, 2021

RCMN-21V789-2488.pdf 440.491KB

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ISSUED Owner Notification Letter(Part 577)

RCONL-21V789-1927.pdf 291.952KB

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Manufacturer Notices(to Dealers,etc) – Recall Campaign Initial Notification Update Passenger Seat Occupant Recognition System MY21 223 (S-Class)

RCMN-21V789-0130.pdf 136.43KB

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Recall 573 Report: October 11, 2021

RCLRPT-21V789-9855.PDF 216.846KB

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Recall 573 Report: December 2, 2021

RCLRPT-21V789-8783.PDF 216.876KB

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Recall Quarterly Report #3, 2022-2

RCLQRT-21V789-9166.PDF 211.326KB

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Recall 573 Report – August 2, 2022

RCLRPT-21V789-1556.PDF 216.88KB

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Latest Recalls Documents

For the Latest and Most Recent Recalls Information Visit the link below…

https://www-odi.nhtsa.dot.gov/acms/cs/documentList.xhtml?docId=21V789&docType=RCL

 


 

Mercedes-Benz Reprogramming

J2534 Pass-Thru

All information in regard to Mercedes-Benz J2534 compliant software is available free of charge and found under the MB Workshop Resources tab on the home page of www.startekinfo.com

J2534 complaint software for Mercedes-Benz vehicles is available for purchase from Mercedes-Benz USA.

In order to use the J2534 complaint software for Mercedes-Benz vehicles, the purchaser must furnish their own:

  • Windows based PC or laptop*
  • J2534 compliant interface box*1*

*Must be purchased from a third party company and are not available from Mercedes-Benz USA LLC.

*1* suggested listing of J2534 interface boxes is located within the J2534 Pass-Thru User’s Manual which is posted for view without cost under the MB Workshop Resources tab on the home page of www.startekinfo.com

 

Vehicle Coverage

J2534 complaint software for Mercedes-Benz vehicles has coverage for all required functions associated to reprogramming, initialization, and fault clearing of emission control modules (engine and transmission) fitted to vehicles 2004 Model Year and newer. Additionally all access and functionality required in regard the configuration via SCN Coding and/or CVN Coding is covered.

J2534 complaint software for Mercedes-Benz vehicles is delivered via DVD media which is delivered monthly for the license term of one year upon purchase.

  • All control unit software (reprogramming calibrations) is contained within J2534 DVD media.

 

Terms and conditions

J2534 complaint software for Mercedes-Benz vehicles is purchased in 1-year license increments. During that license term the user will receive an initial software package, license key, SCN/CVN Coding information/access as well as monthly updates via DVD media.

  • Additional updates of software after the 1st year can be purchased at additional cost, however are not required for the system to continue functioning.

For pricing and additional information via the internet, please refer to the information at the beginning of this section.

 

2021 Mercedes-Benz S-Class Update Passenger Seat Occupant Recognition System | small light CarDAQ-Plus - PassThru J2534 Vehicle Reflash Hardware
2021 Mercedes-Benz S-Class Update Passenger Seat Occupant Recognition System | small light CarDAQ-M Modular PassThru J2534 Vehicle Reflash Hardware
2021 Mercedes-Benz S-Class Update Passenger Seat Occupant Recognition System | small light CarDAQ-Plus 3
2021 Mercedes-Benz S-Class Update Passenger Seat Occupant Recognition System | small light Bosch Automotive Tools MTECH2 Mastertech II J2534
2021 Mercedes-Benz S-Class Update Passenger Seat Occupant Recognition System | small light Autel (AULMF2534) MaxiFlash Pro
2021 Mercedes-Benz S-Class Update Passenger Seat Occupant Recognition System | small light Drew Technologies (DRWCDPLUSKIT) CarDAQ-Plus J2534 Flash Reprogramming Kit
2021 Mercedes-Benz S-Class Update Passenger Seat Occupant Recognition System | small light RAP2 OEM J2534 Remote Reprogramming Tool
2021 Mercedes-Benz S-Class Update Passenger Seat Occupant Recognition System | small light Autel MaxiFlash Elite VCI J2534 Pass-Thru ECU Programming Tool
2021 Mercedes-Benz S-Class Update Passenger Seat Occupant Recognition System | small light BOSCH Automotive Tools MTECH2 Mastertech II J2534 VCI
2021 Mercedes-Benz S-Class Update Passenger Seat Occupant Recognition System | small light Autel MaxiFlash VCI Vehicle Communication Interface J2534 PassThru ECU Programming Device Bluetooth Connection Internet Update Support CAN FD, 4 CAN Channels, DoIP, D-PDU Works with PC or Autel MS909
2021 Mercedes-Benz S-Class Update Passenger Seat Occupant Recognition System | small light GODIAG J2534

 

www.startekinfo.com

 


 

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Last update on 2024-04-17 / Affiliate links / Images from Amazon Product Advertising API

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