2011 Prevost H3 problems

What is wrong

Marathon Coach, Inc. (Marathon) is recalling certain model year 2001-2013 Marathon Conversions Prevost XL, and H3 motorcoaches equipped with Sure Power-brand battery equalizers or DC-DC converters containing a particular epoxy sealing, aka 'potting', compound. The specific potting compound used in the subject products for insulation was found to be capable of conducting electricity after being exposed to heat.

Risk

Once electrically conductive, the material is capable of melting and burning, increasing the risk of a fire.

Remedy

Marathon will notify owners, and Marathon service centers will replace the equalizers or converters, free of charge. The recall is expected to begin in March 2014. Owners may contact Marathon at 1‑352‑588‑4500.

Recall number 14V041000 · Recall details

What is wrong

Prevost is recalling certain model year 2010-2013 H3 and X3 coaches and MTH XLII-45E coach shells manufactured between June 29, 2009, up to June 4, 2012, and equipped with an Automatic Fire Detection and Suppression System (AFSS). There is the possibility that the AFSS could unintentionally activate due to wear of the linear thermal detection cable.

Risk

An activation of the AFSS causes the vehicle to come to an unplanned stop. This could increase the risk of a vehicle crash or personal injury.

Remedy

Prevost will notify owners, and dealers will inspect and repair the linear thermal detector by adding a protective sheath, free of charge. The recall began in March 2013. Owners may contact Prevost at 1‑418‑883‑2888 x 6558.

Recall number 13V015000 · Recall details

the federal safety agency's Office of Defects Investigation (ODI) opened a Preliminary Evaluation after reviewing field reports concerning alternator front bearing failures that cause elevated temperatures within the engine compartment, resulting in the fire suppression system (FSS) activating, immediately shutting the engine down, and rendering the bus inoperable.Analysis of the data provided by Prevost Car (US) Inc. showed high failure frequency and thermal events. An immediate shutdown of the bus can increase the risk of a crash or injury of bus occupants. In response to this investigation, Prevost Car (US) Inc. and Volvo Bus Corporation decided to conduct recalls 22V‑221 and 22V‑222. By submitting Part 573 Defect Information Reports on April 6, 2022, Prevost Car (US) Inc. and Volvo Bus Corporation notified ODI of a safety defect in certain model year (MY) 2010-2023 Prevost H3-45; X3-45; X3-45 Com; H3-45 VIP: X3-45 VIP and 2020 Volvo 9700 vehicles; some of these buses may have experienced thermal events after failure of the alternator front bearing, because the alternator belt continues to turn the alternator after the bearing failure.These recall actions address the safety concern that led to the opening of this investigation.Therefore, with these recall actions, this investigation is closed. The recalls encompass all model and MY vehicles addressed by the investigation. However, the closing of this investigation does not constitute a finding by the federal safety agency that a safety-related defect does not exist in other model or MY vehicles outside of the recall scope. The agency reserves the right to take further action if warranted by the circumstances.

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