24E027 – ER24-14 – Coolant Heater May Overheat – Eberspächer Hydronic L-II Heaters

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March 20, 2024 NHTSA CAMPAIGN NUMBER: 24E027000

Coolant Heater May Overheat

Excessive exhaust gas may increase the risk of carbon monoxide poisoning, and an overheating heater increases the risk of a fire.


NHTSA Campaign Number: 24E027

Manufacturer Prevost Car (US) Inc.

Components EQUIPMENT

Potential Number of Units Affected 7



Prevost Car (US) Inc. (Prevost) is recalling certain Eberspächer Hydronic L-II Heaters, with part number 870012. The coolant heaters may generate excessive exhaust gas and overheat.



Owners of vehicles that are equipped with these coolant heaters are advised not to operate the heaters until they have been repaired. Prevost will inspect the coolant heaters, replace the damaged components, and clean the heater’s internal components, as necessary. In addition, Prevost will adjust the air to fuel ratio. All repairs will be performed free of charge. Owner notification letters are expected to be mailed May 3, 2024. Owners may contact Prevost customer service at 1-866-870-2046. Prevost’s number for this recall is ER24-14.



Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.


Prevost Technical Publications


Chronology :

November 2023 to January 2024 Three reports of heater malfunctions were received from the Canadian market. The reports indicated that certain components located in the heater’s combustion chamber exhibited thermal damage (self-extinguishing events). The reports were received on 2023-11-27, 2024-01-10, and 2024-01-23.

2024-02-21 One warranty claim from the Canadian market was received. The warranty claim indicated that the heater installed on a MY2024 Prevost H3-45 vehicle generated excessive exhaust smoke.

2024-03-08 The coolant heater supplier informed Prevost that a potential safety-related defect has been discovered in certain heaters sold to Prevost.

2024-03-12 Case was presented on Volvo Product Safety Evaluation Committee (PSEC) to evaluate if there is a potential safety-related issue. Decision made to raise the potential safety issue to Volvo Product Safety Committee (PSC) for review and determination.

2024-03-13 Delivery stop was issued to stop the delivery of defective parts in the aftermarket until corrective actions are implemented.

2024-03-14 Case was presented to Volvo Product Safety Committee (PSC). It was concluded that there was a safety-related issue and that a recall is needed. In addition to the safety recall, PSC also adhered to the supplier’s instructions and recommends all customers to immediately stop using the heaters until they are remedied.

2024-03-20 Defect Information Report submitted to authorities.

No accidents, injuries or fatalities related to this issue were reported.


1 Affected Product




2 Associated Documents

Recall Acknowledgement

RCAK-24E027-3524.pdf 645.483KB


Defect Notice 573 Report

RCLRPT-24E027-5154.PDF 215.39KB


Latest Recalls Documents

For the Latest and Most recent Recall Information Visit the link below…




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Last update on 2024-07-23 / Affiliate links / Images from Amazon Product Advertising API

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