# Service bulletin WB14\-44B

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10110702
- Published by NHTSA: 2017\-08\-04
- Manufacturer's number: WB14\-44B
- Manufacturer's date: 2014\-09\-26
- NHTSA component: EQUIPMENT:ELECTRICAL

## NHTSA's summary

On the vehicles affected by this bulletin, changing of VECU \(Vehicle Electronic Control Unit\) parameters is necessary. This update must be carried out by qualified technicians. Make an appointment with your nearest Prevost Service Center. ELECTRIC AIR DRYER CUT\-OFF PRESSURE \& DESICCANT REGENERATION FACTOR This update involves all OBD13 \& GHG14 vehicles in service \(refer to Application table for involved vehicles range\). This update will reduce air dryer cut\-off pressure from 144 psi to 140 psi and extend desiccant regeneration time, thus preventing presence of water in the accessory tank.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2014/MC-10110702-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2014/MC-10110702-0001.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Equipment and accessories

## Vehicles listed

- 2013 to 2015 PREVOST H3\-41
- 2013 to 2015 PREVOST H3\-45
- 2014 to 2015 PREVOST H3\-VIP
- 2014 to 2015 PREVOST X3
- 2014 to 2015 PREVOST X3\-45 VIP

JSON: [/v1/bulletins/10110702](/v1/bulletins/10110702)

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