SC-24-009
Service Bulletin/Repair Instructions
Software update for the 800vRRs Vehicle and Body Software to reduce the radiator fan current draw to 80%. Additionally corrects a bug to properly route ESM faults away from the coolant light icon.
Vehicle report
2020 PROTERRA ZX5
Service bulletins
87 bulletinsTechnical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
SC-23-054
Service Bulletin/Repair Instructions
Relocation of the air compressors intake as well as adding a preliminary filter at the top of the air intake.
FC-23-140
Service Bulletin/Repair Instructions
Service bulletin fleet check for the transit buses due to potential missing split blocks on DuoPower Vehicles.
SC-22-134
Service Bulletin/Repair Instructions
Replaces curb side Duopower motor when failure occurs.
SC-23-136
Service Bulletin/Repair Instructions
This procedure describes the process for updating the 800VvRR DuoPower Vehicle, Powertrain, Body Controller, ESM and Charge Controller software to BuSCoM 2.0.
IB-23-124
Service Bulletin/Repair Instructions
Service Bulletin for Transit Vehicles to reduce the gearboxes PMI interval due to failing filters.
FC-23-003
Service Bulletin/Repair Instructions
Repair instruction to inspect heavy duty transit vehicles for humidity in the battery pack and perform preventative maintenance.
SC-23-070
Service Bulletin/Repair Instructions
Transit bus body work repair instructions to support destination side delamination repair.
SC-22-044
Service Bulletin/Repair Instructions
Bulletin instructions for rotating the ambient temp sensor 180deg on transit buses to reduce road debris from accumulating on the temp sensor.
SC-23-043
Service Bulletin/Repair Instructions
Replaces DuoPower Drive Motor when a failure occurs on the streetside electric motor.
SC-23-094
Service Bulletin/Repair Instructions
Inspection document of the Transit Duo Power vehicles to take a close look at the oil filters.
SC-23-069
Service Bulletin/Repair Instructions
The procedure describes the process of replacing the overhead bracket and brackets between hat bracket overhead to a more robust design.
SC-23-085
Service Bulletin/Repair Instructions
The procedure describes the process of updating the gearboxes from a dual turn to a single turn snap ring on Duopower buses.
SC-23-079
Service Bulletin/Repair Instructions
This procedure describes the process for updating the 800V DuoPower Body, Vehicle and Powertrain Controllers software to the latest version.
SC-21-128
Service Bulletin/Repair Instructions
Transit bus repair for the ADA ramp brackets, new method to secure the interior body mounting brackets for the front door ramp.
SC-22-150
Service Bulletin/Repair Instructions
Bulletin to add shim under the steering TLP due to build variances of the bodies and bond gaps.
SC-23-001
Service Bulletin/Repair Instructions
Transit bus repair instruction to install new fasters on the destination sign for improved durability.
SC-22-115
Service Bulletin/Repair Instructions
Repair instructions for transit buses to replace the destination sign bracket hardware to nylocks.
SC-23-029
Service Bulletin/Repair Instructions
Repair bulletin for the HVAC Condenser Y Pipe on certain transit vehicles.
SC-22-140
Service Bulletin/Repair Instructions
DuoPower Axle Shaft Failure repair procedure due defective batch of shafts.
SC-22-135
Service Bulletin/Repair Instructions
Transit bus repair to the overhead destination sign, the replacement frame includes extra gussets in the corners of the frame.
FC-23-006
Service Bulletin/Repair Instructions
Repair instructions for the telemetry system on the heavy duty transit buses if the system is not reporting.
SC-22-104
Service Bulletin/Repair Instructions
Instructions to add spacers to the aux heat tank to reduce stress acted on.
SC-21-176
Service Bulletin/Repair Instructions
Transit bus torque update to HVJB in the rear trunk of the bus.
SC-21-157
Service Bulletin/Repair Instructions
Transit bus repair to add seals around the dust covers over the top of the drive axle to prevent dust from entering around the shift solenoids.
SC-22-120
Service Bulletin/Repair Instructions
DriveTrain software update to improve diagonstics and shifting for the vehicle.
FC-22-157
Service Bulletin/Repair Instructions
Fleet check repair instruction for heavy duty transit buses to inspect for connector between interlock and ATC being installed in the wrong location.
IB-23-032
Service Bulletin/Repair Instructions
Service Bulletin for an alternative coolant temp sensor for transit buses as the original sensor installed is challenging to purchase due to supply constraints.
SC-22-088
Service Bulletin/Repair Instructions
Replacement connectors and upgraded heat shrink to prevent UV damage to the wiring.
SC-22-085
Service Bulletin/Repair Instructions
Service Bulletin Instructions to update the vehicle controller software, bug fixes ands improvements to the vehicle.
SC-21-177
Service Bulletin/Repair Instructions
Transit bus repair instructions for auxiliary heat system. Replacement coolant lines that pass under the streetside wheelwell box.
SC-22-079
Service Bulletin/Repair Instructions
Instructions for a vehicle controller update on the transit buses to fix bugs and protect components, specifically overhead charging, compressor and inverter. Improving diagnostics of these units.
SC-22-073
Service Bulletin/Repair Instructions
Bulletin Instructions to switch out stanchion fittings that attach the vertical rails to ceiling system on transit buses.
SC-22-058
Service Bulletin/Repair Instructions
Bulletin to update Transit bus body controllers for improved diagnostics and two new parameters to accommodate customer requests.
SC-21-103
Service Bulletin/Repair Instructions
Repair instructions for rooftop passthrough if wires have heat damage. Related to 24V-655, prior to remedy.
SC-21-010
Service Bulletin/Repair Instructions
Transit bus body composite repair at the rear door if any fiberglass is delaminating.
SC-21-166
Service Bulletin/Repair Instructions
Transit bus repair for exterior compartments gas strut brackets. Document provides instruction to improve the securement of the fixed brackets.
SC-21-158
Service Bulletin/Repair Instructions
Transit bus repair for the ADA ramp closeout bracket on the exterior of the bus. The replacement part is made from stainless steel reducing the previous mild steel that was corroding.
SC-22-017
Service Bulletin/Repair Instructions
Service Bulletin for select transit buses to incorporate an overlay harness bus buses with high CAN noise.
SC-21-181
Service Bulletin/Repair Instructions
Transit bus inspections for shipping blocks installed in egress windows to ensure proper closing/latching.
SC-22-027
Service Bulletin/Repair Instructions
Bulletin Instruction for upgrading the body and vehicle controllers software on transit buses. Update to fault thresholds and additional parameters added from customer requests.
SC-22-003
Service Bulletin/Repair Instructions
Transit bus procedure to inspect torque strips on the steering gearbox and record breakaway values then replacing the hardware and using blue loctite to reinstall.
SC-21-170
Service Bulletin/Repair Instructions
Transit bus repair instruction for compartment for an extended latch catch.
SC-21-183
Service Bulletin/Repair Instructions
Transit bus repair instructions to install a drain in the cavity where the ADA ramp sits.
SC-21-151
Service Bulletin/Repair Instructions
Transit bus repair to the air compressor, adding a snorkel to relocate the air intake to get cleaner air into the compressor.
SC-21-143
Service Bulletin/Repair Instructions
Transit bus repair at the battery thermal management system in which the U bracket is being replaced due to cracking.
SC-22-004
Service Bulletin/Repair Instructions
Service Bulletin for transit vehicles to offset the ride height manifold to prevent the manifold from contacting a airline.
SC-21-130
Service Bulletin/Repair Instructions
Transit bus repair to replace mudflaps behind the rear wheels. Larger mudflaps will be installed to minimize road grime and debris from entering the rear vehicle cage, thereby offering better protection for the components in the rear of the bus.
SC-21-148
Service Bulletin/Repair Instructions
Transit bus powertrain software update to support the product to shift smoothly and reduce nuisance faults.
SC-21-139
Service Bulletin/Repair Instructions
Transit bus software update the HVAC controllers from our supplier. Adds additional protection from over current and logic for the heater safety switch faults that can occur on shutdown and restart.
SC-21-001
Service Bulletin/Repair Instructions
Transit bus repair to the wheel well compartment hinge. The compartment lid was previously bonded on, this repair instructions updates the vehicle to use fasteners as well.
SC-21-112
Service Bulletin/Repair Instructions
Transit bus repair to the vehicles wiper switch, the switch is replaced in this bulletin to improve reliability as the switch was stuck on.
SC-21-005
Service Bulletin/Repair Instructions
Transit bus torque verification on the HV battery grounds.
SC-21-106
Service Bulletin/Repair Instructions
Transit bus software to fix bugs and reduce nuisance faults. Creates new EEPROMs for specific customer requests also updates logic for vehicles exterior lights to have cornering lights while in night mode.
SC-21-034
Service Bulletin/Repair Instructions
Transit bus repair to the air compressor, the previous banjo fitting was prone to leaking, the solid drain plug prevents compressor from losing oil.
SC-21-060
Service Bulletin/Repair Instructions
Transit bus rear axle cover bolt replacement. The hardware originally installed had the wrong coating for the harness road grim.
SC-21-097
Service Bulletin/Repair Instructions
Transit bus torque verification on the 3 phase power junction box for the air compressor.
SC-20-148
Service Bulletin/Repair Instructions
Transit bus steering column maintenance document to supplement maintenance and repair manual.
SC-21-039
Service Bulletin/Repair Instructions
Transit bus repair to the heated mat at the rear door of the vehicle to resolve sealing and securement issues.
SC-21-048
Service Bulletin/Repair Instructions
Transit bus fleet check to inspect the steering gearboxes and replace hardware.
SC-21-054
Service Bulletin/Repair Instructions
Transit bus repair instructions to the composite door header bracket if the door falls out of alignment.
SC-21-088
Service Bulletin/Repair Instructions
Transit bus software update to the body controller, to update the controls to have the overhead lighting turn off after the doors close to reduce glare.
SC-20-145
Service Bulletin/Repair Instructions
Transit bus repair to the exterior compartment for the LV batteries. The hatch gas strut brackets were only bonded in place therefore with the new brackets they use hardware to secure. Additionally longer gas struts are provided to help service the LV batteries.
SC-21-058
Service Bulletin/Repair Instructions
Transit bus repair to the rear mud flaps to eliminate a gap to reduce road grime from entering the rear trunk of the vehicle.
SC-21-087
Service Bulletin/Repair Instructions
Transit bus repair for horn relays, improved horn relay installed during retrofit.
SC-21-077
Service Bulletin/Repair Instructions
Transit bus software update to the batteries, charge controller and vehicle controller. Fixes coolant level LEDs, ESM updated specific parameters around temperatures and auto pack configuration, BMS SW resolves brick imbalance, min/max humidity levels.
SC-20-165
Service Bulletin/Repair Instructions
Transit bus repair to support adding drains to an internal cavity of the bus body to prevent water accumulation.
SC-20-140
Service Bulletin/Repair Instructions
Transit bus repair for the rear door VIP sensors. This repair provides a clip to go behind the sensor to keep it from falling down.
SC-21-021
Service Bulletin/Repair Instructions
Transit bus retrofit to upgrade parking brake release tank to 2.5 gallons.
SC-21-056
Service Bulletin/Repair Instructions
Transit bus repair to the HVAC, the supply air temperature sensor is being replaced to improved sealed sensor provided by our HVAC OEM. The sensor failure prevents the HVAC from running.
SC-21-075
Service Bulletin/Repair Instructions
Transit bus repair to HV roof pantograph charging cables. The HV lugs that are bolted to the pantograph rail must be fully sealed to prevent water ingress.
SC-21-050
Service Bulletin/Repair Instructions
Transit bus reliability improvement for the air intake of the auxiliary heater to intake fresher air.
SC-21-035
Service Bulletin/Repair Instructions
Transit bus door software update from door manufacturer to fix bugs.
SC-21-045
Service Bulletin/Repair Instructions
Transit bus torque verification on the intermediate steering shaft.
SC-20-159
Service Bulletin/Repair Instructions
Transit bus repair to the side windows to include a larger sealing gasket to prevent water from entering cabin.
SC-21-008
Service Bulletin/Repair Instructions
Transit bus drive axle retrofit to replace a lock washer on the transmission.
SC-21-020
Service Bulletin/Repair Instructions
Transit vehicle software update to the body controller and vehicle controller. Improving visibility on the dash to LV battery voltage and ABS on the dash will flash when active.
SC-20-155
Service Bulletin/Repair Instructions
Transit bus repair to a coolant line under the rear hatch. New part in document is a molded hose to prevent hose from chaffing on the rear hatch.
SC-21-019
Service Bulletin/Repair Instructions
Transit vehicle repair instructions for replacing a ride height manifold due to EMI sensor failures.
SC-21-002
Service Bulletin/Repair Instructions
Transit bus hvac software update as the vendor found a bug inwhich the heater could run with out running the fan tripping the heating safety switch fault.
SC-21-029
Service Bulletin/Repair Instructions
Transit bus repair instructions for the duo drive axle in the event one of the wheelends fail this document supplements the rebuild.
SC-20-150
Service Bulletin/Repair Instructions
Transit bus repair to the compartment hatches over each of the wheel wells. The gas strut mounts for the hatches are now fastened with hardware to prevent debonding of the brackets.
SC-20-164
Service Bulletin/Repair Instructions
Transit bus software update to the drivetrain controller. Revised controls for start up procedure, revised transmission oil pump speed for cold starts and resolved some other bugs.
SC-19-124
Service Bulletin/Repair Instructions
Transit bus repair to modify the plumbing of the hill hold solenoid to see slightly more pressure.
SC-20-147
Service Bulletin/Repair Instructions
Transit bus software update to support the quarterly cadence of software upgrades. This release updates a timer to the drivers seat to reduce false alarms of no driver in the seat over bouncy roads, mapped new output for horn relay. For the vehicle controller fixed issue around the ambient and coolant temp sensor. And many other fixes seen in the documentation
SC-20-081
Service Bulletin/Repair Instructions
Transit bus rear interlock solenoid retrofit to install sealed solenoid to reduce damage from road grime.
SC-20-064
Service Bulletin/Repair Instructions
Transit bus repair to the aux heat convectors to secure wiring harness, it was found the previous adhesive material used would debond when heated.
Reading this report
Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.