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Service bulletins for the 2014 BMW 335i

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.

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

By type

By component

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

Bulletins, newest first
6103142018-11-05. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Check Control Messages Related to Battery Charge During Cold Ambient Temperatures. On cold days with an outside ambient temperature of less than 15°F, customers may notice a check control message related to the battery that is displayed on the instrument cluster and the control information display. Under these conditions, the vehicle starts. Various power management faults can be stored. When the outside temperatures drop below 46°F, the charging system is switch to full charge. CAUSE ? The check control message (ID 229) is caused by a heavily discharged battery. ? The check control message is triggered when the current state of charge (SoC) of the battery approaches the minimum SoC that is required to start the vehicle (start capability limit). ? In low outside ambient temperatures, the start capability limit of the vehicle is higher. Therefore it takes more energy from the battery to start a cold engine. ? Without the early warning of the check control message, the current state of charge would drop below the start capability limit and the vehicle would not start. ? The vehicle's intelligent power management system actively takes measures to increase the charge of the battery, such as increasing idle speed and reducing or shutting down certain electrical consumers.
B2402152018-11-05. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN. 8HP: TRANSMISSION FLUID LOSS FROM COOLER LINES CONNECTIONS. There is a transmission fluid leak in the area around the oil cooler lines (on the transmission side). CAUSE Damaged O-rings due to unfavorable cooling line connection tolerances
B3302162018-11-05. Service bulletin. POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT. Howling Noise from the Rear Differential. When coasting from 85 - 70 mph, there is a howling noise from the rear differential. CAUSE Resonance behavior during the running-in phase of the PHEV rear differential.

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