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June 5, 2023 NHTSA CAMPAIGN NUMBER: 23V406000
A/C Compressor Failure Causes Loss of Drive Power
Loss of power to the chassis can cause an engine stall, increasing the risk of a crash.
NHTSA Campaign Number: 23V406
Manufacturer Tiffin Motorhomes, Inc.
Components ELECTRICAL SYSTEM
Potential Number of Units Affected 450
Summary
Tiffin Motorhomes, Inc. (Tiffin) is recalling certain 2022-2023 Phaeton, Allegro Bus, and Zephyr motorhomes. A fuse will trip during an a/c compressor failure, causing a loss of power to the chassis.
Remedy
Dealers will inspect the chassis controller, and install a harness and inline fuse as necessary, free of charge. Owner notification letters are expected to be mailed August 4, 2023. Owners may contact Tiffin customer service at 1-256-356-8661. Tiffin’s number for this recall is TIF-131.
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.
Chronology :
04/30/2023 there was a field complaint reported to the chassis service department about a of loss of chassis power. Tiffin field service technicians and chassis engineering began to investigate and determined the dash A/C compressor had failed and that the dash A/C compressor and the ignition switch power were wired on the same circuit block.
5/30/2023 Issue was brought before the safety committee, and they voted to issue a recall.
6 Affected Products
Vehicles
MAKE | MODEL | YEAR |
TIFFIN | ALLEGRO BUS | 2022-2023 |
TIFFIN | PHAETON | 2022-2023 |
TIFFIN | ZEPHYR | 2022-2023 |
2 Associated Documents
Defect Notice 573 Report
RCLRPT-23V406-1159.PDF 217.257KB
Recall Acknowledgement
RCAK-23V406-1438.pdf 645.854KB
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=23V406&docType=RCL
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Last update on 2024-04-12 / Affiliate links / Images from Amazon Product Advertising API
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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 23V-406 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Tiffin Motorhomes, Inc. Submission Date : JUN 05, 2023 NHTSA Recall No. : 23V-406 Manufacturer Recall No. : TIF-131 Manufacturer Information : Manufacturer Name : Tiffin Motorhomes, Inc. Address : 105 2nd Street NW PO Box 596 Red Bay AL 35582 Company phone : 999 Population : Number of potentially involved : 450 Estimated percentage with defect : 50 % Vehicle Information : Vehicle 1 : 2022-2023 TIFFIN PHAETON Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : PowerGlide chassis controller, IFM brand. In review of manufacturing records, Tiffin Motorhomes started using an additional brand of chassis controller, IFM brand, due to supply chain shortages on 05/02/2022 so the population will include all Phaetons, Allegro Buses and Zephyrs built on PowerGlide Chassis between 05/02/2022 and 05/22/2023. Tiffin Motorhomes has identified 450 chassis located in the United States that could contain this controller. All PowerGlide chassis built during this period are involved, the chassis controller would need to be inspected to confirm if it is the recalled component or not. Production Dates : MAY 02, 2022 – MAY 22, 2023 VIN Range 1 : Begin : 5VBBA27A0PA122871 End : 5VBZA89AXPA123184 ✔ Not sequential Vehicle 2 : 2022-2023 TIFFIN ALLEGRO BUS Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : PowerGlide chassis controller, IFM brand. In review of manufacturing records, Tiffin Motorhomes started using an additional brand of chassis controller, IFM brand, due to supply chain shortages on 05/02/2022 so the population will include all Phaetons, Allegro Buses and Zephyrs built on PowerGlide Chassis between 05/02/2022 and 05/22/2023. Tiffin Motorhomes has identified 450 chassis located in the United States that could contain this controller. All PowerGlide chassis built during this period are involved, the chassis controller would need to be inspected to confirm if it is the recalled component or not. Production Dates : MAY 02, 2022 – MAY 22, 2023 VIN Range 1 : Begin : 5VBBA27A0PA122871 End : 5VBZA89AXPA123184 ✔ Not sequential Part 573 Safety Recall Report 23V-406 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 3 : 2022-2023 TIFFIN ZEPHYR Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : PowerGlide chassis controller, IFM brand. In review of manufacturing records, Tiffin Motorhomes started using an additional brand of chassis controller, IFM brand, due to supply chain shortages on 05/02/2022 so the population will include all Phaetons, Allegro Buses and Zephyrs built on PowerGlide Chassis between 05/02/2022 and 05/22/2023. Tiffin Motorhomes has identified 450 chassis located in the United States that could contain this controller. All PowerGlide chassis built during this period are involved, the chassis controller would need to be inspected to confirm if it is the recalled component or not. Production Dates : MAY 02, 2022 – MAY 22, 2023 VIN Range 1 : Begin : 5VBBA27A0PA122871 End : 5VBZA89AXPA123184 ✔ Not sequential Description of Defect : Description of the Defect : PowerGlide chassis controller, IFM brand. In the event of an a/c compressor failure, the current draw spike from the compressor will blow the fuse protecting the circuit. The fuse also supplies the ignition power circuit causing a loss of ignition power to the chassis when the fuse is blown. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : Loss of all power to chassis, engine stoppage, which could lead to an increased risk of crash. Description of the Cause : Lack of circuit protection in the event of an a/c compressor failure. Identification of Any Warning that can Occur : None Involved Components : Component Name 1 : MODULE MULTI PLEX IFM Component Description : CHASSIS CONTROL MODULE Component Part Number : CR0033 Part 573 Safety Recall Report 23V-406 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Supplier Identification : Component Manufacturer Name : IFM EFFECTOR, INC Address : PO BOX 8538-307 PHILADELPHIA Pennsylvania 19171-0307 Country : United States Chronology : 04/30/2023 there was a field complaint reported to the chassis service department about a of loss of chassis power. Tiffin field service technicians and chassis engineering began to investigate and determined the dash A/C compressor had failed and that the dash A/C compressor and the ignition switch power were wired on the same circuit block. 5/30/2023 Issue was brought before the safety committee, and they voted to issue a recall. Description of Remedy : Description of Remedy Program : All field units involved in the recall will be inspected to verify which brand of chassis controller is installed. If a chassis has the IFM controller, a harness with an inline fuse will be installed into the wiring harness for the A/C compressor so that in the event of a failure of the A/C compressor, the inline fuse will blow and the power to the ignition switch will not be lost. Letters will be mailed to all owners and dealers with involved units notifying them of a recall. The repair will be completed at no charge to the owner. There is no plan for reimbursement because any failures would have been covered under Tiffin’s PowerGlide chassis warranty. How Remedy Component Differs from Recalled Component : In the field, a jumper harness with the inline fuse will be installed at the chassis controller. In production, a programming change will be applied to separate the circuit for the A/C compressor and the ignition switch. Identify How/When Recall Condition was Corrected in Production : As of 05/22/2023, an engineering change notification was issued to provide a controller programming change to separate the A/C compressor from the ignition power supply. Recall Schedule : Description of Recall Schedule : Tiffn Motorhomes will mail letters to customers and dealers that are in possession of the involved coaches explaining the issue and asking them to take the motorhome to a dealer or service center for inspection and replacement, if needed, at no cost to the owner. Planned Dealer Notification Date : AUG 04, 2023 – AUG 04, 2023 Planned Owner Notification Date : AUG 04, 2023 – AUG 04, 2023 Part 573 Safety Recall Report 23V-406 Page 4 The information contained in this report was submitted pursuant to 49 CFR §573 * NR – Not Reported
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