SC-25-015
POWER TRAIN
Service bulletin outlining an EEPROM adjustment to reduce regeneration cycles, resulting in lower cabin noise and reduced operating temperatures.
2023 Proterra ZX5
Recalls, owner-reported complaints, investigations and safety data
Owner complaintsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
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Safety recallsA safety recall is issued when a manufacturer or NHTSA determines that a vehicle has a safety-related defect or does not comply with a federal motor vehicle safety standard. Recall repairs are free. Whether a specific vehicle is covered depends on its VIN — a recall listed for a model year does not necessarily apply to every vehicle of that year.
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InvestigationsNHTSA opens an investigation to examine whether a safety defect may exist. An open investigation is not a determination that a defect exists, and many investigations close without a recall. Investigations can, however, lead to one.
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Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
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Overview
Our database contains no NHTSA owner-reported complaints for the 2023 Proterra ZX5. 24 manufacturer communications are on file.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Safety recalls
No recalls in our database for this model year
That does not guarantee a specific vehicle is unaffected — recalls are issued against VINs, and new campaigns are announced regularly. Check a VIN on NHTSA.gov.
Recent owner complaints
Reports submitted to NHTSA, shown in the owner's own words
No owner complaints recorded for this model year
Either none have been filed with NHTSA, or this vehicle is too new for reports to have accumulated.
Manufacturer communications
A bulletin sent by a manufacturer to its dealers. Not a recall, and repairs are not necessarily free.
SC-24-013
ELECTRICAL SYSTEM
Transit bus software update to support bugs and enhancement for the fleet. As well as fault updates.
SC-24-014
ELECTRICAL SYSTEM
Heavy duty transit bus software update to support bugs and enhancements for the ZX5 fleet.
SC-23-007
ELECTRICAL SYSTEM
HVAC Software update to increase the threshold voltage from 740v to 785v to overcome with the HV fault at 100% SOC.
SC-23-160
ELECTRICAL SYSTEM
Transit bus vehicle controller software update to fix bugs and improve driver experience.
SC-23-176
ELECTRICAL SYSTEM
BMS software update to the latest version. It improves current sensors performance and adjusts the isolation fault threshold value.
Manufacturers file copies of the bulletins they send to dealers with NHTSA. These often describe diagnostic or repair procedures for a known condition. They are not recalls: repairs described in a bulletin are usually only free if the vehicle is still under warranty or the manufacturer has extended coverage.
Compare model years
Complaint and recall counts across every year of this model
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers. Older model years have had longer for reports to accumulate.