RC000200 – Front Seat Wiring Harnesses Routed Incorrectly – 2020-2021 Thor Motor Coach Daybreak, Four Winds, Quantum, Delano, Tiburon, Chateau & Freedom Elite & 2020 Gemini, Chateau Citation, Compass, Siesta, & Synergy Motorhomes

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July 29, 2020 NHTSA CAMPAIGN NUMBER: 20V444000

Front Seat Wiring Harnesses Routed Incorrectly

If the wiring harness is damaged, the side air bag within the seat may deploy inadvertently or not deploy as designed in the event of a crash, increasing the risk of injury to vehicle occupants.

 

NHTSA Campaign Number: 20V444

Manufacturer Thor Motor CoacheBay

Components ELECTRICAL SYSTEM, AIR BAGS, SEATS

Potential Number of Units Affected 463

 

Summary

Thor Motor CoacheBay (Thor) is recalling certain 2020-2021 Daybreak, Four Winds, Quantum, Delano, Tiburon, Chateau and Freedom Elite motorhomes and 2020 Gemini, Chateau Citation, Compass, Siesta, and Synergy motorhomes built on SprintereBay Van chassis (platform 970 (VS30), equipped with swivel seats. The wiring harnesses for the front seats may have been routed incorrectly and could become jammed and damaged in the swivel seat frames.

 

Remedy

Thor will notify owners, and Mercedes-BenzeBay dealers will inspect the wire harness routing for both front seats and will repair the wiring and add clips or cable ties as needed, free of charge. This recall began August 13, 2020. Owners may contact Thor customer service at 1-877-855-2867 Mercedes-BenzeBay customer service at 1-877-762-8267. Thor’s number for this recall is RC000200.

 

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.safercar.gov.

 


RECREATIONAL VEHICLE

SAFETY RECALL NOTICE

Safety Recall: 20V-444

Safety Advisory: RC000200

August 2020

 

IMPORTANT SAFETY RECALL

This notice applies to your vehicle:  «VIN»

 

«Owner_name»
«Street»
«City», «State» «Zip»

 

Dear «Owner_name»:

This notice is sent to you in accordance with the requirements of the National Traffic and Motor Vehicle Safety Act. Thor Motor CoacheBay (TMC) has decided that a safety defect exists in certain TMC motorhomes based upon notification by Mercedes-BenzeBay USA, LLC that a defect which relates to motor vehicle safety exists in certain MB USA chassis that were used to manufacture your TMC motorhome. MB USA was issued recall 20V-322 by the National Highway and Safety Administration (NHTSA) to remedy this defect. MB USA’s recall number is 2020070011. To assist MB USA and NHTSA in identifying the final vehicles manufactured, TMC is also conducting a safety recall.  We apologize for any inconvenience this action may cause you; however your safety and continued satisfaction are of the utmost importance to us.

 

Reason for this recall

On certain model year 2020/2021 Daybreak, Four Winds, Delano, Gemini, Quantum, Tiburon, Chateau Citation, Compass, Chateau, Siesta, Freedom Elite, and Synergy motorhomes built on a SprintereBay chassis that is equipped with front swivel-seats, the wires in the seat wiring harness could become jammed and damaged in the swivel-seat frame. In that case, the operation of the side airbag within the driver and/or front passenger seats could be adversely affected, which could cause the side airbag to deploy inadvertently or not deploy as designed in the event of a crash, increasing the risk of injury to vehicle occupants.

 

What we will do

TMC has included in this mailing the recall notification letter from MB USA. MB USA will be handling the repair of your vehicle at an authorized dealer. The dealer will inspect the routing of the front seat (left/right) seat wiring harnesses and will repair as necessary. This service will be provided free of charge. The minimum repair time is approximately 2 hours.

 

What we need you to do

Please review the included MB USA recall notification letter for further instructions.  If you have questions about this Recall, please contact MB USA directly at 1-800(FOR)-MERCEDESeBay. For other concerns, you may contact the TMC Warranty/Service Department at (877) 855-2867 or Recalls@TMCRV.com.

 

If after contacting MB or TMC Customer Service you are still not satisfied we have done our best to remedy this situation, you may also submit a written complaint to: Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue, SE, Washington, DC 20590. You may call the toll-free Vehicle Safety Hotline at 1-888-327-4236 (TTY:  1-800-424-9153; or go to https://www.safercar.gov.) Federal regulations require that any vehicle lessor receiving this recall notice must forward a copy of this notice to the lessee within ten days.

Thank you for your attention and cooperation in this matter.

 

Sincerely,

Thor Motor CoacheBay

 

Hanah Klodzinski
Recall Compliance Coordinator
cc:  National Highway Traffic Safety Administration (NHTSA)

 


Chronology of Defect (too many characters for the recall portal comment box)

Chronology:

 

In March 2019, a production plant in Germany identified that the front seat wiring harness on an individual vehicle was not secured in place as expected.

 

A first technical evaluation in March 2019 did not identify the risk of pinching damage to the wiring harness and, therefore, impact to the SRS system was not identified at that time.

 

After investigation, additional clips and route guiding were introduced into the production plants in June/July, 2019.

 

An additional improvement was made in October 2019, to introduce an extended wiring harness that could provide additional flexibility in the cable to move along with the seat.  Moreover, additional instructions for the correct mounting of the wiring harness were provided for production.

 

Further investigation revealed that Mercedes-BenzeBay had received about 33 field inputs with regard to the front seats and/or the electrical system, including some from the United States market.  Field reports were received starting in the second half of 2019 and were generally received early in the life of the vehicles (3-6 months).

 

Mercedes-BenzeBay continued to investigate under what circumstances the SRS indicator lamps could illuminate and the potential consequences for vehicles equipped with front swivel seats.  This included consideration of the potential impact on multiple functions, including impact on driver assistance systems, occupant sensing systems, seat belt reminders, side airbags and electrical seat adjustment or heating.  The cable routing system requires a complex balance of ensuring flexibility to allow seat movement and effecting the security of the wire harness system itself.

 

Investigations were also focusing on potential consequences from certain lines of the complex wiring harness becoming pinched individually or in combination at the same time.

 

MBAG’s investigation continued into 2020.  Due to the COVID-19 pandemic, plants were shut down and many employees were furloughed during the spring of 2020.  Nonetheless, MBAG was able to isolate the cause of the electric failures in the field. This included the cases where illumination of the SRS indicator lamp occurred due to a disruption in the signals to the side airbag, which could lead to the side airbag either deploying inadvertently or not deploying as required. MBAG is unaware of any such incidents having occurred either in the US or elsewhere.

 

On May 27, 2020, MBAG determined that a safety risk could not be ruled out and decided to initiate a recall campaign.

 



19 Affected Products

Vehicles

MAKEMODELYEAR
THOR MOTOR COACHeBayCHATEAU2020-2021
THOR MOTOR COACHeBayCHATEAU CITATION2020
THOR MOTOR COACHeBayCOMPASS2020
THOR MOTOR COACHeBayDAYBREAK2020-2021
THOR MOTOR COACHeBayDELANO2020-2021
THOR MOTOR COACHeBayFOUR WINDS2020-2021
THOR MOTOR COACHeBayFREEDOM ELITE2020-2021
THOR MOTOR COACHeBayGEMINI2020
THOR MOTOR COACHeBayQUANTUM2020-2021
THOR MOTOR COACHeBaySIESTA2020
THOR MOTOR COACHeBaySYNERGY2020
THOR MOTOR COACHeBayTIBURON2020-2021

 


7 Associated Documents

Recall Acknowledgement

RCAK-20V444-2664.pdf 245.101KB

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Miscellaneous Document – Chronology Document

RMISC-20V444-0848.pdf 598.534KB

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Defect Notice 573 Report

RCLRPT-20V444-5141.PDF 221.212KB

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Manufacturer Notices(to Dealers,etc)

RCMN-20V444-1069.pdf 590.392KB

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ISSUED Owner Notification Letter(Part 577)

RCONL-20V444-8092.pdf 148.285KB

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Miscellaneous Document – Fleet.MB Final ONL_Letter Swivel Seat

RMISC-20V444-8255.pdf 182.46KB

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Manufacturer Notices(to Dealers,etc)

RCMN-20V444-6170.pdf 141.637KB

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Latest Recalls Documents

 


 

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