WenmarOpen by Wenmar Pro

Service bulletins for the 2014 BMW 320i

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.

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

By type

By component

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
B1803102018-11-05. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. "? NO REGENERATION OF THE DIESEL PARTICULATE FILTER (DPF) This Service Information bulletin supersedes SI B18 03 10 dated November 2010. . The Service Engine Soon lamp is illuminated. The following fault codes may be stored in the DDE: N47T/N57T engine 245700 - Particle filter system: particulate filter highly loaded (Exhaust backpressure high) 245800 - particle filter system - filter is heavily contaminated. (exhaust backpressure is above maximum) M57Y engine 480A Particle filter system - filter is heavily contaminated. (exhaust backpressure is too high) 481A Particle filter system - filter is heavily contaminated. (exhaust backpressure is above maximum) CAUSE 1. Faults with the exhaust system that affect the monitoring of the DPF by the DDE 2. Unfavorable recent driving profile INFORMATIOM During normal driving, there is a continuous regeneration of the diesel particulate filter that takes place at exhaust-gas temperatures between 280 and 350°C (slower oxidation process). The soot particles can only be burned off when the required exhaust-gas temperature has been reached. Under certain driving conditions (i.e., prolonged short trips or an exhaust system which never reaches soot burn-off temperatures), the DPF can become restricted. The DDE will initiate periodic regeneration automatically, at the latest after 600 miles. In vehicles making many short distance journeys, periodic regeneration takes place after only 250-500 miles. The Digital Diesel Electronics control unit evaluates the time for periodic regeneration from the following values: average distance driven average driving speed temperature in the diesel particulate filter values from the exhaust pressure sensor The DDE initiates the regeneration process by decreasing incoming air by the throttle valve, and one or two post injections are executed. This heats the exhaust-gas temperature to approx. 600° C . When the exhaust temp reaches this point: The soot is burned off with the residual oxygen. The
B1801172018-11-05. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; ENGINE. "? DIESEL PARTICULATE FILTER (DPF) CLEANING . The following performance issues may be noticed by the customer: CC-Message ""Drive faulty"" Engine jerking or a lack of power over the whole engine speed range Malfunction indicator lamp (MIL) is illuminated The following fault codes may be stored in the DDE: N47T/N57T engine Main Faults: 245700 - Particle filter system: particulate filter highly loaded (Exhaust backpressure high) 258300 - Exhaust backpressure sensor, Signal: Signal too high Secondary Faults: 244C00 - Charging pressure control, control deviation: charging pressure too low/positive deviation 25DA00 - Exhaust gas difference pressure sensor particle filter, Signal: short circuit to plus pole M57Y engine Main Faults: 480A particle filter system 481A particle filter system Secondary Faults: 4530 charging pressure control, control deviation 429A charging pressure control low pressure stage, control deviation Clogged DPF."
B1117162018-11-05. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. ?VOLUNTARY EMISSIONS RECALL CAMPAIGN 16E-A05 - N26 ENGINE: REPLACE TURBOCHARGER OIL SUPPLY LINE . Carbonization of the turbocharger sealing ring can cause the exhaust to smoke briefly during cold start up.
B1103172018-11-05. Service bulletin. ENGINE. ?N20 AND N26 ENGINE: HIGH PITCHED WHINING NOISE FROM LOWER ENGINE AREA . Whining noise from the lower engine area near the engine oil pump that increases frequency when increasing the engine RPM. Wear on the engine oil pump chain drive sprockets.
B1204182018-10-09. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING. BUZZING NOISE FROM VALVETRONIC MOTOR BEFORE OR AFTER ENGINE OPERATION: Buzzing noise may be heard from the Valvetronic motor when the vehicle is unlocked, before the engine is started, or after the engine is turned off.
B1103172018-07-16. Service bulletin. ENGINE AND ENGINE COOLING. N20 AND N26 ENGINE TIMING CHAIN AND OIL PUMP DRIVE CHAIN: LIMITED WARRANTY EXTENSION TO 7 YEARS/70,000 MILES
B0101162018-05-14. Service bulletin. ENGINE AND ENGINE COOLING. N20 Engine Coolant Thermostat: Limited Warranty Extension to 10 Years/120,000 Miles
B1101152018-04-23. Service bulletin. ENGINE. Engine Oil Quick Reference Chart and Drain Plug Torque: The current version of ISTA/D has an error in the engine oil capacity specification for all vehicles with the N63R engine and xDrive.
SIB-12-26-142015-02-07. Service bulletin. ENGINE. BMW: WITH DRIVETRAIN MALFUNCTION MESSAGE DISPLAYED AND SERVICE ENGINE SOON, ENGINE CAN GO INTO REDUCED POWER MODE, DUE TO ENGINE POSITION MANAGEMENT (EPM) UNFAVORABLE PARAMETERS IN DME SOFTWARE. *PE

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