Windshield Wiper Motor May Fail – 2020-2022 Proterra Catalyst, & ZX5

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FINAL LETTER
IMPORTANT SAFETY RECALL
NHTSA Recall Number: 23V-078
This notice applies to vehicles with the following vehicle VIN numbers: See enclosed VIN list.
This notice is sent to you in accordance with the requirements of the National Traffic and Motor Vehicle Safety Act.
April 3, 2023
Dear Proterra Vehicle Owner,
This notice applies to certain Proterra 35’ Catalyst, 35’ ZX5 and 40’ ZX5 Transit Buses, equipped with windshield wiper motors supplied by Doga USA Corp. and produced between June 1, 2020 and January 1, 2022.
What is the reason for this notice?
Proterra has determined that windshield wiper motors installed on vehicles within the recall population may operate intermittently or stop operating. This may cause a noncompliance with Federal Motor Vehicle Safety Standard (“FMVSS”) 104 – Windshield Wiping and Washing Systems, and may cause reduced visibility or loss of visibility in certain conditions, increasing the risk of a crash. Wiper motors within the recall population will be replaced with new wiper motors at no cost to the vehicle owner.
Why is your equipment being recalled?
Vehicles equipped with the affected windshield wiper motors are being recalled because a wiper motor that operates intermittently or stops operating may cause reduced visibility or loss of visibility in certain conditions, increasing the risk of a crash. Proterra will provide a replacement of the affected wiper motor at no cost to you. We apologize for the inconvenience. We are committed to your safety, the safety of your customers, and your continued satisfaction with our products.
IMPORTANT
• Your Proterra vehicle is subject to NHTSA Safety Recall No. 23V-078 because a wiper motor that operates intermittently or stops operating may cause reduced visibility or loss of visibility in certain conditions, increasing the risk of a crash.
• Affected wiper motors within the recall population will be removed and replaced with non-defective wiper motors. Proterra is providing this remedy to you free of charge.
• Contact Proterra’s customer service department at 864-438-0000 or ServiceParts@Proterra.com if you have any questions.
What will Proterra Do?
Affected wiper motors within the recall population will be removed and replaced with non-defective wiper motors. Proterra is providing this remedy to you free of charge. A Proterra service representative will contact you to make arrangements for the remedy to be implemented.
What Should You Do?
A Proterra service representative will contact you to make arrangements for the remedy to be implemented. Please contact Proterra’s customer service department at 864-438-0000 or ServiceParts@Proterra.com if you have any questions.
What If You Have Already Repaired the Defect?
If you have previously paid for a repair that addresses the defect described in this letter, you still need to have this recall performed by Proterra to ensure the correct remedy was applied. However, you may be eligible for a reimbursement of the previous repair. Please contact Proterra’s customer service team at 864-438-0000 or ServiceParts@Proterra.com to verify eligibility and process your reimbursement request.
What If You Have Other Questions?
Please contact Proterra’s customer service department at 864-438-0000 or ServiceParts@Proterra.com with any questions or concerns about this information. If, after contacting Proterra’s customer service department, you are still not satisfied we have done our best to remedy this condition without charge and within a reasonable time, you may wish to write the Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue, SE, Washington, DC 20590, or call the toll-free Vehicle Safety Hotline at 1.888.327.4236 (TTY 1.800.424.9153), or go to http://www.safercar.gov. The National Highway Traffic Safety Administration Campaign ID Number for this recall is 23V-078.
Federal regulation requires that any vehicle lessor receiving this recall notice must forward a copy of this notice to the lessee within ten days.

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OMB Control No.: 2127-0004
Part 573 Safety Recall Report 23V-078
The information contained in this report was submitted pursuant to 49 CFR §573
Manufacturer Name : Submission Date :
Proterra Operating Company, Inc. APR 17, 2023 NHTSA Recall No. : 23V-078 Manufacturer Recall No. : TBD Manufacturer Information :
Manufacturer Name : Proterra Operating Company, Inc.
Address : 1815 Rollins Road
Burlingame CA 94010 Company phone : 4380000
Population :
Number of potentially involved : 274 Estimated percentage with defect : 13 %
Vehicle Information : Vehicle 1 : 2020-2022 Proterra 35′ Catalyst, 35′ ZX5, 40′ ZX5 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : HYBRID ELECTRIC
Descriptive Information : The windshield wiper motors installed on vehicles within the recall population may operate intermittently or stop operating, which has the potential for reduced visibility or loss of visibility in certain conditions, increasing the risk of a crash. The issue is caused by a chemical reaction due to a stamping oil the wiper motor supplier used in its manufacturing process. The recall population was determined by reviewing the wiper motor supplier’s manufacturing records and other related information.
Vehicles with wiper motors manufactured after the date the wiper motor supplier implemented corrective actions in its manufacturing process to address the issue are not included in the recall population. 274 vehicles are in the recall population. Wiper motors within the recall population will be replaced with new wiper motors at no cost to the vehicle owner. Production Dates : JUN 01, 2020 – JAN 01, 2022
VIN Range 1 : Begin : NR End : NR Not sequential Description of Noncompliance :
Description of the Noncompliance :
The windshield wiper motors installed on vehicles within the recall population may operate intermittently or stop operating. FMVSS 1 : 104 – Windshield wiping and washing systems FMVSS 2 : NR
Description of the Safety Risk : A windshield wiper motor that operates intermittently or stops operating has the potential for reduced visibility or loss of visibility in certain conditions,
increasing the risk of a crash. Part 573 Safety Recall Report 23V-078 Page 2 Description of the Cause : The issue was caused by a stamping oil used during the wiper motor supplier’s manufacturing process. Identification of Any Warning
that can Occur : Affected windshield wiper motors may function intermittently, may not move in sync with each other, or may not come to rest at the proper locations when the wipers are turned off. Involved Components : Component Name 1 : Windshield wiper motor Component Description : Windshield wiper motor Component Part Number : 319.9213.3B.00 Supplier Identification : Component Manufacturer
Name : Doga USA Corp.
Address : 12060 Raymond Ct
Huntley Illinois 60142 Country : United States Chronology :
On November 30, 2022, Proterra met with its wiper motor supplier’s quality engineer and design engineer to discuss warranty claims and the root cause of the issue identified in this report. Based on Proterra’s investigation, on February 6, 2023, Proterra’s Safety Committee voted to recall the vehicles in the recall population. Between December 2020 and April 2023, Proterra received 70 customer claims to fix 104 wiper motors; Proterra knows of no personal injuries, accidents, or damages to other property caused by this issue. Description of Remedy :
Description of Remedy Program : Wiper motors within the recall population will be replaced with new
wiper motors at no cost to the vehicle owner. All affected owners are are covered by Proterra’s General Reimbursement Plan. The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 23V-078
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The information contained in this report was submitted pursuant to 49 CFR §573
How Remedy Component Differs from Recalled Component : Identify How/When Recall Condition was Corrected in Production :
The remedy component was manufactured by the wiper motor supplier after the date the wiper motor supplier implemented corrective actions in its manufacturing process to address the root cause.
In June 2021, Proterra’s wiper motor supplier implemented corrective actions in its manufacturing process to address the root cause. Recall Schedule :
Description of Recall Schedule : Proterra will notify affected owners about this recall on or before April
10, 2023.
Planned Dealer Notification Date : APR 03, 2023 – APR 10, 2023
Planned Owner Notification Date : APR 03, 2023 – APR 10, 2023
* NR – Not Reported

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OMB Control No.: 2127-0004
Part 573 Safety Recall Report 23V-078
The information contained in this report was submitted pursuant to 49 CFR §573
Manufacturer Name : Submission Date :
Proterra Operating Company, Inc. FEB 13, 2023 NHTSA Recall No. : 23V-078 Manufacturer Recall No. : TBD Manufacturer Information :
Manufacturer Name : Proterra Operating Company, Inc.
Address : 1815 Rollins Road
Burlingame CA 94010 Company phone : 4380000
Population :
Number of potentially involved : 274 Estimated percentage with defect : 13 %
Vehicle Information : Vehicle 1 : 2020-2022 Proterra 35′ Catalyst, 35′ ZX5, 40′ ZX5 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : HYBRID ELECTRIC
Descriptive Information : The windshield wiper motors installed on vehicles within the recall population may operate intermittently or stop operating, which has the potential for reduced visibility or loss of visibility in certain conditions, increasing the risk of a crash. The issue is caused by a chemical reaction due to a stamping oil the wiper motor supplier used in its manufacturing process. The recall population was determined by reviewing the wiper motor supplier’s manufacturing records and other related information.
Vehicles with wiper motors manufactured after the date the wiper motor supplier implemented corrective actions in its manufacturing process to address the issue are not included in the recall population. 274 vehicles are in the recall population. Wiper motors within the recall population will be replaced with new wiper motors at no cost to the vehicle owner. Production Dates : JUN 01, 2020 – JAN 01, 2022
VIN Range 1 : Begin : NR End : NR Not sequential Description of Noncompliance :
Description of the Noncompliance :
The windshield wiper motors installed on vehicles within the recall population may operate intermittently or stop operating. FMVSS 1 : 104 – Windshield wiping and washing systems FMVSS 2 : NR
Description of the Safety Risk : A windshield wiper motor that operates intermittently or stops operating has the potential for reduced visibility or loss of visibility in certain conditions,
increasing the risk of a crash. Part 573 Safety Recall Report 23V-078 Page 2 Description of the Cause : The issue was caused by a stamping oil used during the wiper motor supplier’s manufacturing process. Identification of Any Warning
that can Occur : Affected windshield wiper motors may function intermittently, may not move in sync with each other, or may not come to rest at the proper locations when the wipers are turned off. Involved Components : Component Name 1 : Windshield wiper motor Component Description : Windshield wiper motor Component Part Number : 319.9213.3B.00 Supplier Identification : Component Manufacturer
Name : Doga USA Corp.
Address : 12060 Raymond Ct
Huntley Illinois 60142 Country : United States Chronology :
On November 30, 2022, Proterra met with its wiper motor supplier’s quality engineer and design engineer to discuss warranty claims and the root cause of the issue identified in this report. Based on Proterra’s investigation, on February 6, 2023, Proterra’s Safety Committee voted to recall the vehicles in the recall population. As of the filing date of this report, Proterra has received warranty claims to replace 72 affected wiper motors; Proterra knows of no personal injuries, accidents, or damages to other property caused by this issue. Description of Remedy :
Description of Remedy Program : Wiper motors within the recall population will be replaced with new
wiper motors at no cost to the vehicle owner.
How Remedy Component Differs The remedy component was manufactured by the wiper motor supplier The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 23V-078
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The information contained in this report was submitted pursuant to 49 CFR §573
from Recalled Component : after the date the wiper motor supplier implemented corrective actions in its manufacturing process to address the root cause. Identify How/When Recall Condition was Corrected in Production : In June 2021, Proterra’s wiper motor supplier implemented corrective actions in its manufacturing process to address the root cause. Recall Schedule :
Description of Recall Schedule : Proterra will notify affected owners about this recall on or before April
10, 2023.
Planned Dealer Notification Date : NR – NR
Planned Owner Notification Date : APR 03, 2023 – APR 10, 2023
* NR – Not Reported

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