Service bulletins for the 2018 Nissan Altima
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.
192 on file from NHTSA, as of 2026-10-19.
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Only bulletins with component: Heating and air conditioning are shown. Show all
| NTB18-006 | 2018-06-18. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER; ENGINE AND ENGINE COOLING. 2016-2018 ALTIMA WITH QR25DE/4-CYL ENGINE; MOAN NOISE AFTER A/C COMPRESSOR ENGAGES This bulletin applies only to vehicles equipped with a 4-cylinder engine. IF YOU CONFIRM A moan type noise is heard just after the A/C is turned ON (compressor engages) and lasts for about 10 seconds and/or While the A/C is operating and the compressor clutch cycles from OFF to ON, the moan noise is heard for about 10 seconds. ACTION Replace the low pressure A/C flex hose with the one listed in PARTS INFORMATION. Do NOT replace the compressor for this incident, if it should occur. This bulletin does not apply for compressor clutch locked, squeal noises, or any other A/C malfunctions. |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.