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Service bulletins for the 2018 Audi A4 allroad

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.

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

By type

By component

By trouble code

By topic

Only bulletins with component: Transmission and driveline are shown. Show all

Bulletins, newest first
A3924632059057_92024-08-06. Service bulletin. POWER TRAIN. This bulletin provides information when there are vibrations or binding in tight turns.
A3724172074804_12024-08-06. Service bulletin. POWER TRAIN. This bulletin provides information for when there are dorning/vibrations in tight bends - 0CL Gearbox.
A3724142074751_12024-08-06. Service bulletin. POWER TRAIN. This bulletin provides information about replacing the clutch end cover.
A3724132074750_12024-08-06. Service bulletin. POWER TRAIN. This bulletin provides information about replacing the clutch end cover.
A2424612074810_12024-08-06. Service bulletin. POWER TRAIN. This bulletin provides information when there is a fault shown; Engine: start/stop system, and the start system is not working; mileage below 50 km/32 miles.
A3924602059057_82024-05-06. Service bulletin. POWER TRAIN. This bulletin provides information when there is binding or vibrations in tight turns in vehicles equipped with quattro Ultra.
A3019252053597_32019-07-09. Service bulletin. POWER TRAIN. This bulletin contains repair instructions for when there is a leak from the lower bellhousing.
A3019242053597_22019-06-06. Service bulletin. POWER TRAIN. This bulletin contains repair instructions for when there is a leak from the lower bellhousing.
A301923 20535972019-04-08. Service bulletin. POWER TRAIN. This bulletin contains repair instructions for when there is a leak from the lower bellhousing.
A301923 20535972019-04-01. Service bulletin. POWER TRAIN. This bulletin contains repair instructions for when there is a leak from the lower bellhousing.
A341838 2048671-2019-02-19. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE); ELECTRICAL SYSTEM:SOFTWARE. This bulletin contains instructions for when DTC U030000 appears and ?All Wheel Drive Malfunction Message? is displayed in the instrument cluster.
A391821 2051558-2018-09-17. Service bulletin. EQUIPMENT:MECHANICAL; POWER TRAIN:CLUTCH ASSEMBLY. This bulletin contains repair instructions for when the message "four-wheel drive malfunction" shows up sporadically in the instrument cluster with DTC C05ED00.
A341834 2051575-2018-09-17. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; EQUIPMENT. This bulletin contains repair instructions when there is a squeaking noise from the MTF pump.
A341832 2045108_2018-04-16. Service bulletin. POWER TRAIN; BACK OVER PREVENTION. This technical bulletin provides information regarding a rattling noise or vibrations when creeping in reverse or drive.
A341831 2050461_2018-04-16. Service bulletin. POWER TRAIN. This bulletin contains repair instructions for when there is an oil from the transmission (0CK, 0CL, or 0CJ).
A341723 2048671-2018-02-05. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. This bulletin contains instructions for when DTC U030000 appears and ?All Wheel Drive Malfunction Message? is displayed in the instrument cluster.

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