2020 Mercedes-Benz GLS-Class Airbag Control Unit Parameters

October 1, 2021 NHTSA CAMPAIGN NUMBER: 21V771000

Driver’s Front Air Bag May Not Deploy Properly

An air bag that does not deploy properly during a crash can increase the risk of injury.

 

NHTSA Campaign Number: 21V771

Manufacturer Mercedes-Benz USA, LLC

Components AIR BAGS

Potential Number of Units Affected 3

 

Summary

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2020 GLS 580 vehicles. The air bag control unit software may be programmed incorrectly, which can cause the driver’s air bag to deploy improperly.

 

Remedy

Dealers will replace the air bag control unit, free of charge. Owner notification letters are expected to be mailed November 30, 2021. 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 Recall Campaign to replace the airbag control unit and software on 3 Model Year (“MY”) 2020 GLS-Class (X167 platform) 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 8, 2021.

 

Issue

Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (“MY”) 2020 GLS-Class vehicles (X167 platform), the airbag control unit software might not meet current production specifications. If the vehicle’s airbag control unit software does not meet current production specifications, in the event of a crash with activation of driver’s frontal airbag, the risk of injury to the driver might increase.

 

What We’re Doing

MBUSA will conduct a voluntary recall.   An authorized Mercedes-Benz dealer will replace the airbag control unit, which includes the correct parameter data set, on the affected vehicles.

 

Parts

Remedy is not available at this time.

 

Customer Notification Timeline

Customer letters will be mailed on 10/29/2021.

 


Replace Airbag Control Unit

Model 167

  • 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 battery charger to ensure sufficient power supply of the vehicle’s 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. Replace Supplemental Restraint System (SRS) control unit (AR91.60-P-0624ME).

 


Chronology :

In the second quarter of 2019, a certification crash test indicated a possible deviation from the occupant load specified by FMVSS 208 S15 for one single load case, caused by installation of airbag parameters that were different from those that were intended.

Subsequently, MBAG conducted a plant action to rework all affected GLS vehicles. MBAG developed a new parameter data addressing the potential deviation and implemented it in production.

The vehicle plant later determined that in isolated instances affected vehicles might have been released for sale without first being reworked. MBAG commenced an investigation to identify potentially affected vehicles and to determine the effects of the use of those different parameters.

For much of 2020, MBAG operations were severely restricted due to the COVID-19 pandemic. As operations began to resume in the second half of 2020, MBAG conducted further evaluations to identify potential effects of the different parameter data set on the restraint system. In parallel, regulatory compliance was analyzed, which continued into 2021.

From February 2021 on, analyses were carried out to evaluate the potential effects of the variant airbag parameters on occupant load values in the event of a frontal impact. At the same time, MBAG conducted a review to determine if the potentially affected vehicles had been reworked after release from the plant and prior to sale. That review confirmed that a total of three (3) vehicles sold in the US had not received the updated parameter data set. On September 24, 2021, MBAG determined that a potential safety risk could not be ruled out and decided to conduct a recall.

The recall applies to three vehicles determined to not satisfy the load requirements for an unbelted fifth percentile adult female.

 


1 Affected Product

Vehicle

MAKEMODELYEAR
MERCEDES-BENZGLS5802020

 


12 Associated Documents

ISSUED Owner Notification Letter(Part 577)

RCONL-21V771-7135.pdf 781.576KB

 


ISSUED Owner Notification Letter(Part 577)

RCONL-21V771-0191.pdf 214.434KB

 


Recall Quarterly Report #1, 2021-4

RCLQRT-21V771-3942.PDF 211.145KB

 


Recall 573 Report – AMENDMENT 2

RCLRPT-21V771-6695.PDF 214.483KB

 


Recall 573 Report – AMENDMENT 1

RCLRPT-21V771-2385.PDF 214.504KB

 


Manufacturer Notices(to Dealers,etc) – Recall Campaign Launch Notification Replace Airbag Control Unit MY20 GLS-Class (X167 platform)

RCMN-21V771-3113.pdf 558.19KB

 


Manufacturer Notices(to Dealers,etc) – Recall Campaign Initial Notification Airbag Control Unit Parameters MY20 GLS-Class (X167 platform)

RCMN-21V771-7303.pdf 288.447KB

 


Remedy Instructions and TSB

RCRIT-21V771-3472.pdf 301.285KB

 


Recall Acknowledgement

RCAK-21V771-9741.pdf 644.93KB

 


Defect Notice 573 Report

RCLRPT-21V771-8812.PDF 214.501KB

 


Recall Quarterly Report #2, 2022-1

RCLQRT-21V771-5972.PDF 211.242KB

 


Recall Quarterly Report #3, 2022-2

RCLQRT-21V771-2730.PDF 211.325KB

 


Latest Recalls Documents

 


 

SaleBestseller No. 1
FOXWELL Car Scanner NT604 Elite OBD2 Scanner ABS SRS Transmission
  • [Easy to Use—Work Out of the Box] + [FOXWELL 2026 New Version] FOXWELL NT604 Elite scan tool is the 2026 new version from FOXWELL, designed for car owners who want to figure out the cause of issues before fixing car problems by scanning common systems like ABS, SRS, engine, and transmission. The NT604 Elite obd2 scanner diagnostic tool comes with the latest software—no need to waste time downloading software first. Plug the scanner into the OBDII port with OBDII cable to start the diagnosis.
  • [Affordable] + [Reliable Car Health Monitor] Will you be confused what happens when the warning light of ABS/SRS/transmission/check engine flashes? Instead of taking your cars to dealership, this FOXWELL scanner will help you do a thorough scanning and detection for your cars and pinpoint the root cause. Note:The device is a diagnostic tool, not a repair tool. To turn off a warning light, you must first physically repair the issue causing it. Only then can the scanner be used to clear the corresponding fault code.
  • [5 in 1 Car Diagnostic Scanner] Compared with obd scanners (50-100), NT604 Elite code scanner not only includes their OBDII diagnosis but also serves as ABS/SRS scanner, transmission and check engine code reader. When it’s an odb2 scanner, you can use it to check if your car is ready for annual test through I/M readiness menu. In addition, live data stream, built-in DTC library, data play back and print, all these features are a big plus for it. Note: doesn't support maintenance functions like reset or relearn. For the SRS system, NT604 Elite can read and clear common fault codes not caused by a crash, but crash/collision data cannot be cleared.
  • [Fantastic AUTOVIN] + [No extra software fee] Through the AUTOVIN menu, this NT604 Elite car scanner allows you to get your V-IN and vehicle info rapidly, no need to take time to find your V-IN and input one by one. What's more, the NT604 Elite ABS SRS scanner supports 60+ car brands from worldwide (America/Asia/Europe). You don’t need to pay extra software fee. AUTOVIN may not work on some older vehicles or certain vehicle brands. If AUTOVIN fails, please input the vin code manually or go to the Diagnostic Menu to select your vehicle model.
  • [Solid protective case KO plastic carrying bag] + [Lifetime update] Almost all same price-level car scanner diagnostic tool only offers plastic bag to hold the scanner.However, NT604 Elite automotive scanner is equipped with solid protective case, preventing your obd2 scanner from damage. Then you don’t need to pay extra money to buy a solid toolbox.
SaleBestseller No. 2
OBDMATE OBD2 Scanner with ABS SRS Transmission Diagnostic Tool
  • 【Reset ABS/SRS/Transmission/Engine Lights】 More than an check engine code reader, OBDMATE OM901 obd2 scanner performs comprehensive diagnostics for the 4 most-used systems (ABS/SRS/Engine/Transmission). It quickly clears fault codes, turns off warning lights, read data stream and auto VIN.
  • 【3.5" Handheld Scanner with 4 System Diagnose】 3.5" Super large TFT screen equipped displays an intuitive menu and clear readings of various sensors from ABS, SRS, ECM and TCM systems. It arrived with a silicone protective case and hard-shell carrying case, ensuring long-lived durability and drop resistance. The car diagnostic tool is plug-to-play designed, plug it and get diagnosis started without any batteries or updates required.
  • 【One-Click I/M Readines&Full OBD2 Functions】 Press F1 to get an intuitive corloured form about whether various emissions-related systems on the vehicle are operating properly. Help you get smog-check ready quickly. OM901 car scanner supports all essential OBD2 functions you need: read & clear codes, view freeze frame, read I/M readiness, retrieve VIN, live data stream (with graphing display), O2 sensor test, onboard monitoring mode, and EVAP leak test.
  • 【Battery Voltage Check&DLC Pin Test】 It allows you to monitor battery health by testing current battery voltage. Plus, this obd2 diagnostic tool features DLC 16-PIN test to check current voltage of every pin.
  • 【Automotive Scanner Diagnostic Kit】 The package comes with 1 car scanner, 1 USB-type c cable, 1 hard storage bag and 1 user manual(en). Free to update without any hidden fees. 5 languanges available in setting including English, French, Italian, German and Espanish. Valuable and Portable, making it a great tool kit for car owners, DIY enthusiasts, and professional mechanics.
Bestseller No. 3
BlueDriver OBD2 Scanner Bluetooth, No Subscription, ABS SRS TPMS
  • [Diagnose Like a Pro] BlueDriver Pro is a professional OBD2 scanner and diagnostic tool that helps you scan, understand, and clear vehicle trouble codes with confidence. Turn your phone into a powerful car diagnostic scanner—no guesswork, no unnecessary repairs.
  • [Read and Clear More Codes Than Ever] Read and clear more codes than basic car code readers. Access enhanced diagnostics for Check Engine, ABS, SRS, Airbag, TPMS, Transmission.
  • [Verified Fixes and Real-Time Data] Get unlimited, technician-verified repair reports matched to your VIN, with definitions, causes, and confirmed fixes. Monitor live vehicle data as you drive, view freeze frames, check smog readiness, and analyze Mode 6 test results.
  • [Wireless & Bluetooth Enabled] - Say goodbye to wires. BlueDriver connects with Bluetooth via your phone/tablet to a sensor that plugs into your car's OBDII port. Get all of the capabilities of an expensive code reader & scan tool without any annoying wires.
  • [Broad Make & Model Coverage] Strong support for GM, Ford, Stellantis (RAM, Jeep, Chrysler), Toyota, Honda, Nissan, Mazda, Subaru, Hyundai, Mercedes-Benz, BMW, and VW.
Bestseller No. 4
Outzone B800 BMW SRS Airbag Reset Tool | OBDII Scanner Read & Clear Fault Codes | Fits E36/E46/E34/E38/E39/Z3/X5 (1994-2003) – Except 2001 330i
  • ✔️【Professional SRS Reset for 1994-2003 BMW】 Designed specifically for classic BMW models (1994-2003). This B800 scanner reads & clears SRS airbag fault codes, turns off the warning light, and saves you a costly dealer visit. Confirmed compatible with: E36, E46 (EXCEPT 2001 330i), E34, E38, E39, Z3, and X5 (E53). NOT compatible with any BMW built before 1994 or after 2003.
  • ✔️【Important: Two Different Connection Ports – Read Before Use】 To avoid “not working” issues, please note: For 1994–2000 BMWs (most E36, E34, Z3, early E39), the SRS diagnostic port is a round 20-pin connector under the hood. You MUST use the included 16-pin to 20-pin adapter cable. For 2000–2003 models (late E46, E39, X5), use the standard OBD-II port inside the cabin. Incorrect connection is the #1 reason for “incompatibility” reports.
  • ✔️【Read & Clear Fault Codes in Minutes】 Quickly diagnose why your SRS light is on. The scanner accurately reads fault codes from airbag and seatbelt pretensioner systems. With one button press, clear the codes and reset the SRS warning light in seconds. No expensive dealer tools needed.
  • ✔️【User-Friendly for DIYers – No Mechanic Required】 Easy operation with an intuitive button layout: ‘Enter’ to confirm, ‘Scroll’ to navigate. The clear LCD screen shows results instantly. Includes a step-by-step manual (revised for clarity) to guide you through the entire reset process.
  • ✔️【Reliable Support with 1-Year Warranty】 We stand behind the quality of our B800 scanner. It comes with a 1-Year Hassle-Free Warranty. If you have any questions or need support, please contact us with your Order ID, and our dedicated team will assist you promptly.
SaleBestseller No. 5
BLCKTEC 460T OBD2 Scanner Car Code Reader Engine ABS SRS Transmission Diagnostic Tool, 12 Reset Services, Oil/TPMS/EPB/BMS/SAS/DPF/Throttle Reset, ABS Bleeding, Battery Test, Auto VIN, Free Update
  • [All System Diagnostics, Professional-Level Scanner] - BLCKTEC 460T is the ultimate OBD2 diagnostic tool for home mechanics and professionals. It supports all 10 OBD2 modes, reads and clears Engine/Transmission/ABS/SRS codes, performs All-System Diagnostics, offers workshop reset tools, and provides real-time live data. It helps you pinpoint issues, assess your car's condition, and prepare for SMOG checks with ease. NOTE: Function availability depends on your vehicle. Before you buy, be sure to use the Compatibility Checker on BLCKTEC website or contact our customer support to verify that the features you need are supported for your vehicle’s specific year, make, and model.
  • [12+ Most Popular Reset Functions] - BLCKTEC 460T OBD2 scanner offers 12+ dealer-level service functions, including Oil Maintenance Reset, ABS Bleeding, EPB Reset, SAS(Steering Angle Sensor) Recalibration, DPF(Diesel Particulate Filter) Reset, Throttle Body Relearn, Battery Reset/Initialization, TPMS Relearn, Transmission Reset, Fluid Change Reset, Maintenance Reset and more, enabling you to perform workshop services like a pro. NOTE: Function availability depends on your vehicle. Be sure to use the Compatibility Checker on BLCKTEC website to verify that the features you need are supported for your vehicle.
  • [Real-Time OBD2 and OEM Live Data, Freeze Frame Data] - BLCKTEC 460T helps diagnose vehicle issues when warning lights like Check Engine Light or ABS/SRS Light appear. It offers detailed DTC info, ECU Freeze Frame Data, and real-time OBD2 and advanced OEM live data, including Engine, Transmission, ABS, SRS, and more, making it easy to diagnose and resolve vehicle problems. You can view, graph, record, replay, and overlay up to four live data streams in a single graph for better analysis.
  • [AutoVIN, AutoReLink, AutoScan, 3X Faster] - Equipped with AutoVIN technology, 460T automatically retrieves the VIN to save you time. Its AutoScan and AutoReLink features scan all of the vehicle's ECUs and detect any fault codes immediately after you plug the scanner into the vehicle's OBD2 port - no button presses required. Additionally, it regathers DTC and I/M readiness information every 30 seconds, simplifying monitor tests. 460T's advanced technology makes it 3X faster than other products.
  • [Get RepairSolutions2, the #1 Auto Repair App for Free] - When paired with RepairSolutions2(RS2) App, 460T becomes even more powerful. RS2's Verified Fix Database built by master technicians, provides the parts needed for the repair. Additionally, RS2 gives you access to OEM warranty info, maintenance schedules, TSB, and dealership recall info, making car care easier than ever. RS2 is free with no subscription fees and it stores your car scan reports in the cloud, allowing you to access, share, or print them anytime and anywhere.

 


This product presentation was made with AAWP plugin.

Leave a Comment

Share to...