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Service bulletins for the 2018 Audi S5

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.

816 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

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Only bulletins with component: Cooling system are shown. Show all

Bulletins, newest first
A1923452070349_22023-12-06. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. This bulletin provides information for when there is a loss of coolant from the coolant pump - V6 TFSI.
A1923392070349_12023-06-06. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. This bulletin advises that a small amount of coolant loss is normal. Otherwise, clean and visually inspect the coolant system in the presence of a small leak to verify if a repair is needed, and then to repair a component if it is verified to have been leaking actively.
A1922272025303122022-02-04. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM; EQUIPMENT. This bulletin contains instructions for identifying and mixing factory fill coolants.
A1921262061918_42022-01-05. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin provides guidance on diagnosing a coolant light concern with normal coolant level in the tank.
A9020652032113_42020-09-03. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING:COOLING SYSTEM. This information bulletin contains a background on the outside air temperature reading.
A0120572058767_32020-05-07. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. This bulletin contains instructions for DTCs P218100, P017B00, P308100, and P01E400.
A0120442054893_22020-03-05. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY; SERVICE BRAKES, HYDRAULIC:FLUID. This bulletin contains instructions for documenting the 'Please reduce Oil Level' message in the instrument cluster potentially with an Engine Warmup request.
A191789 2046712-2018-02-05. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. This informational bulletin contains guidelines for figuring out why coolant marks are present around the coolant expansion tank cap.
A011717 2047707-2018-02-05. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. This informational bulletin provides instructions for when DTC P195000 appears but there is no customer concern.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.