Nova Bus Lfs, model year 2013. Filed by Nova Bus and reported to NHTSA on 17 February 2018. 24 vehicles potentially affected.
What the notice says Nova Bus (Nova) is recalling certain 2013 LFS transit buses equipped with transmission oil coolers. In the event of a transmission oil cooler failure, transmission fluid may mix with coolant that circulates through the passenger compartment heating system. Exposure to transmission fluid may degrade the PEX connectors …
Is your vehicle included? Check with your VIN at NHTSA, or ask a dealer. This page is an independent copy of the notice, kept so you can see what changed after it was published. It is not the authority, and the authority’s own text is the one to act on.
Nova Bus's own number for this recall: CR4225. That is the number on the owner letter and on the dealer paperwork. 18V117 is the number NHTSA gave the same campaign, and the number this page is filed under. They are one recall, written two ways.
What owners ask about this recall
- Which vehicles does recall 18V117 cover?
- Nova Bus LFS, model year 2013.
- What is wrong with them?
- Nova Bus (Nova) is recalling certain 2013 LFS transit buses equipped with transmission oil coolers. In the event of a transmission oil cooler failure, transmission fluid may mix with coolant that circulates through the passenger compartment heating system.
- What can happen if it is not put right?
- Leaking coolant could come into contact with passengers, increasing their risk of injury.
- Is there a fix yet?
- Yes, and it is free. Nova will notify owners, and dealers will replace the PEX fittings with brass fittings, free of charge. The recall began on March 6, 2018. Owners may contact Nova customer service at 1-800-350-6682. Nova's number for this recall is CR4226.
- What should I do now?
- Check your own vehicle by its VIN with NHTSA, which is the record to act on. Nova Bus calls this recall CR4225, which is the number on the owner letter and the dealer paperwork.
Answered from the register this site holds. NHTSA is the record to act on.
What the authority says can happen if this is not fixed: “Leaking coolant could come into contact with passengers, increasing their risk of injury.”
affected
in the notice
caught
| Campaign | 18V117 |
|---|---|
| Filed by | Nova Bus |
| System at fault | Engine And Engine Cooling:Cooling System |
| Reported to NHTSA | 17 February 2018 |
| Model years | 2013-2013 |
| Vehicles named | NOVA BUS LFS |
What the notice says today
The defect
Nova Bus (Nova) is recalling certain 2013 LFS transit buses equipped with transmission oil coolers. In the event of a transmission oil cooler failure, transmission fluid may mix with coolant that circulates through the passenger compartment heating system. Exposure to transmission fluid may degrade the PEX connectors of the heating system, resulting in hot coolant leaking into the passenger area.
The consequence
Leaking coolant could come into contact with passengers, increasing their risk of injury.
The remedy
Nova will notify owners, and dealers will replace the PEX fittings with brass fittings, free of charge. The recall began on March 6, 2018. Owners may contact Nova customer service at 1-800-350-6682. Nova's number for this recall is CR4226.
What it said before
Nothing has changed while we have been watching. We last read the wording of this campaign on 17 September 2026, and it matched the copy we already held.
That copy hashes to 33bfe6c722554337199967cf11098cd6…, so if it is ever edited the change is provable rather than a matter of memory.
This is one of 588 notices in the record whose component field names engine and engine cooling. Across that group the median wait before owners were written to was 47 days.
Last checked . No change has been recorded in the wording.
The models named here, across their whole recall history
How to cite this record
Quoting the wording on this page means quoting a version, so the date belongs in the citation:
CarsMultiverse, recall 18V117, wording as read on 17 September 2026. https://carsmultiverse.com/recall/18v117/
The copy quoted above hashes to 33bfe6c722554337199967cf11098cd6…. If the notice is reworded later, that fingerprint will not match, which is how a reader checks that the quotation was of the version we say it was.
The cross-border matches used on this site are deposited as a citable dataset: doi:10.5281/zenodo.22087136. The recall wording itself is published by the national authority named above and is theirs, not ours.
The recall record and its wording are published by the US National Highway Traffic Safety Administration and are US Government public domain. The dated archive, the comparison and any before-and-after above are CarsMultiverse. How fresh every engine behind this page is, is public on the status page. To check a specific vehicle, use NHTSA’s own VIN lookup.
The fingerprint of this notice
We take a SHA-256 of each of the three blocks of text the authority publishes and keep the first eight characters. As we last read campaign 18V117 on 23 August 2026, they were:
- Defect summary
6648ef75 - Consequence
40fb228e - Remedy
c4c8a2b6
We first read this notice on 21 August 2026. It has not moved since. If it ever does, these characters will not match, and the change will be dated here.
The wording we hold for 18V117 · how the whole register is watched
This notice names one vehicle among several registers that have written about it. Every notice this site holds for the Nova Bus LFS, in all seven, is kept on that vehicle's own page, with the newest in each.
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Owners of these cars
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