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Manufacturer communication · Service campaign

IC BUS service campaign 24117

IC BUS filed this with NHTSA as a service campaign dated Apr 7, 2025, received May 5, 2025, about the engine. It names 1 model year (2024). A service campaign is not a safety recall — there is no NHTSA campaign number and no federal requirement — but it is usually work the manufacturer pays for on the vehicles it names; the dealer checks the VIN against the manufacturer’s list.

What the bulletin says

Source: NHTSA's summary of the manufacturer's communication

Certain IC Busâ„¢ CE Series buses may have an incorrect concentration of antifreeze / coolant installed in the engine

Manufacturer campaign id 24117 Kind Service campaign Manufacturer date Apr 7, 2025 Received by NHTSA May 5, 2025 Components Engine

Document filed under this number

DocumentKindDatedNHTSA id
24117Service campaignApr 7, 202511017804

The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5; the full text comes from the manufacturer or a dealer. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. Quote it at a service desk; it is what the dealer’s system is keyed on.

Model years it names

Source: as the manufacturer filed them

Also filed against: 2024 IC BUS Cesb.

None of these model years has a page on this site (it covers EPA-certified cars, trucks and SUVs from 2016), so the bulletin is listed here on its own.

Common questions

Source: NHTSA, 49 CFR 579.5

Is IC BUS 24117 a recall?

No. A service campaign is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls.

Is the 24117 repair free?

A service campaign is usually paid by the manufacturer on the vehicles it names, within the terms and time limit the document sets; the dealer checks the VIN against the manufacturer’s list.

Which vehicles does 24117 cover?

The manufacturer filed it against 1 model year: 2024 IC BUS Cesb. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.