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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

Bulletins, newest first
1201152018-11-13. Service bulletin. POWER TRAIN. SUBJECT N20 and N26 Differential Pressure Sensor Fault 195002 Stored in DME. The Service Engine Soon (MIL) light is on with the following differential pressure sensor fault stored: z 195002 - Differential pressure sensor, tank vent valve, electrical: Short circuit to ground During engine operation, vibration and movement of the sensor can damage the pin contacts of the harness connector, or cause a break in the wiring.
1102152018-11-13. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV). SUBJECT Deleting DME Adaptations After Crankshaft Sensor-related Repairs. The erroneous misfire faults are stored, and the Service Engine Soon light (MIL) illuminates The ISTA Service Function to delete the DME adaptations fails to clear the crankshaft incremental wheel adaptation, depending on the current DME software version. This adaptation must be cleared whenever the following repairs are made: 1. Replacement of the crankshaft position sensor 2. Replacement of the incremental sensor wheel on the crankshaft 3. Replacement of the crankshaft 4. Replacement of the crankcase (block) with pistons 5. Replacement of the engine assembly Due to slight tolerance differences with the new replacement hardware and the original learned crankshaft position, values could cause cylinder balance calculation errors by the DME. DME software (the incremental wheel adaptation cannot be cleared)
B6411162018-11-13. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS. HALOGEN HEADLIGHT ADJUSTMENT PROCEDURE. Halogen headlights may be misaligned (aimed too low or high).
B6306162018-11-13. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS. HALOGEN HEADLIGHT ADJUSTMENT PROCEDURE. Halogen headlights may be misaligned (aimed too low or high).
B6113162018-11-13. Service bulletin. ELECTRICAL SYSTEM. "KLE CHARGING FAULT 21E6E9. During the ISTA short test diagnosis, fault code 21E6E9 - ""Charging interruption"" is found stored in the KLE (Convenience Charging Electronics) module. There is no customer complaint related to charging system, or a warning check control message display. CAUSE An Erroneous fault 21E6E9 stored in the KLE after completion of AC charging session."
B1602162018-11-13. Service bulletin. FUEL SYSTEM, GASOLINE. Rattle Or Buzzing Noise At 1500 To 2200 Rpm. When accelerating, particularly when driving off on a slope, there is a buzzing, rattling noise coming from the driver's side underbody, near the footwell area. The quick-release coupling for the fuel line is contacting the fuel line protective plate.
B1209162018-11-13. Service bulletin. ENGINE AND ENGINE COOLING. N20 - The Service Engine Soon Light is On with DME Fault 118602 Stored. The Service Engine Soon light is on (MIL) with only the following oxygen sensor fault stored. 118602 - Oxygen sensor before catalytic converter, fine mixture control: exhaust gas after catalytic converter too lean CAUSE An actual engine related problem and/or DME software diagnostic.
B8405152018-11-05. Service bulletin. EQUIPMENT; EQUIPMENT:ELECTRICAL. ConnectedDrive Messages Are Not Received In the Vehicle. One or both of the following may occur: SMS based messages are not received in the vehicle. These are: Text messages - Office feature MyInfo Google send to car - addresses and Points of Interests (POI) Concierge The activation code is not accepted by the ConnectedDrive Portal. Software error in the HU-H (Head unit High).
B8403152018-11-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. "HU-B: Bluetooth Connection Fails Sporadically. The Bluetooth system works intermittently. One or more of the following scenarios may occur: Bluetooth pairing is not possible - display shows ""Please wait"" Unable to select the check box to activate Bluetooth Device does not reconnect to the vehicle after a key cycle Audio interference noise is heard listening to iPod etc. When trying to access the user manual, the display shows ""Please wait"" Incorrect software installed in the HU-B (Headunit Basic)."
B6407152018-11-05. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. IHKA - Outlet Temperature is Different on Both Sides. The IHKA settings on the left- and right-hand side are identical. The outlet temperature for both sides is different. Software application error in IHKA.
B6406152018-11-05. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. "IHKA - Blower Runs in Emergency Mode. After the ignition is turned off and the vehicle is locked, the heating and air conditioning blower motor runs continuously. The next time the vehicle is started there may be the CCM (Check control message) displayed for ""Increased battery discharge"". CAUSE The blower output stage receives an invalid LIN bus signal during operation and switches to emergency mode. The blower will continue to run with the specified emergency mode after the ignition is turned off and the vehicle is locked."
B6405152018-11-05. Service bulletin. EQUIPMENT; EQUIPMENT:APPLIANCE:AIR CONDITIONER. IHKA - Recirculation Function Changes from Manual to Automatic. While driving, the air recirculation button on IHKA changes by itself from manual to automatic or automatic to manual mode. CAUSE The IHKA operating software is too sensitive.
B6305152018-11-05. Service bulletin. EXTERIOR LIGHTING:BACK UP LIGHTS. "Reverse Light is Intermittently Inoperative. CCM (Check control message) is displayed indicating a ""reverse light"" is out. CAUSE There is a weak spring in bulb socket or bulb carrier (on the luggage compartment lid) which is causing a bad contact with the bulb."
B5127152018-11-05. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY. "Under certain conditions, the additional radiator could not be cooled sufficiently. This could cause the engine to overheat. The engine power would be reduced and a Check Control Message would appear. AFFECTED VEHICLES This Delivery Stop involves F34 (3 Series Gran Turismo) produced from July 13, 2015 to July 18, 2015. Vehicles which require this Delivery Stop to be completed will show it as ""Open"" when checked either in AIR, the ""Service Menu"" of DCSnet (Dealer Communication System) or with the Key Reader."
B5126152018-11-05. Service bulletin. STRUCTURE:BODY:DOOR. Driver or Passenger's Front Doors Handles Inoperable. Sporadically it is not possible to open the driver or passenger's front door from the outside or inside door handle. Multiple attempts will eventually open the door. Comfort access operation of the outside door handle works properly. This situation occurs at temperatures below 37 °F. CAUSE Incorrect routing of the Bowden cable.
B5124152018-11-05. Service bulletin. VISIBILITY:REARVIEW MIRRORS/DEVICES; STRUCTURE; VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR. Groaning Noise from the Exterior Mirror. A groaning noise is heard coming from the area around the outside mirror when opening and closing the door. The noise is more noticeable when the door is fully open to the end stop. CAUSE The outer front door weather strip rubs against the mirror housing.
B5123152018-11-05. Service bulletin. STRUCTURE:BODY:DOOR. The Driver's Door Can No Longer Be Opened from the Outside. The driver's door cannot be opened from the outside by the door handle. The door still can be opened from the inside. CAUSE The Bowden cable has become detached.
B3601152018-11-05. Service bulletin. TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS. Check Control Message: Tire Pressure Monitor (RDCi) Failure. A Check Control Message states Tire Pressure Monitor (RDCi) has failed CAUSE Hardware in the remote control unit (FBD3 antenna)
B2704152018-11-05. Service bulletin. POWER TRAIN:DRIVELINE; WHEELS. Shudder from the Driveline on Vehicles with xDrive. There is a shudder or vibration from the driveline when taking off from a stop, or when accelerating at highway speeds. CAUSE Possible multiple root causes related to the engine, wheels & tires, suspension components or internal wear on the clutch plates of the xDrive transfer case.
B1116152018-11-05. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. ?N20 and N26 engine: Smoke from Exhaust when Starting a Cold Engine. When starting a cold engine, blue smoke can be seen emitting from the exhaust tailpipe for approximately 10-20 seconds. No turbo charger boost faults are stored and no drivability issues can be detected. Engine oil leakage into the induction system and/or the turbo charger assembly.
B6510152018-11-05. Service bulletin. EQUIPMENT; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). NAV Road Map Installation Using USB Stick. INFORMATION The Navigation road map can be installed onto the head unit in the vehicle using a USB stick connected to the USB connector in the center console in the vehicle. ? 32GB USB stick is necessary ? Desired NAV road map version can be retrieved from the HDD-Update console PROCEDURE 1. Copy the desired NAV road map from the HDD-Update console onto a 32GB USB stick. Refer to Attachment. 3. When prompted, enter the 20-digit enabling code. 4. Start the NAV road map installation and follow the on-screen instructions. WARRANTY INFORMATION Not applicable. ATTACHMENTS View PDF attachment B651015_Attachment.
B6104152018-11-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; ELECTRICAL SYSTEM:HORN; VISIBILITY:WINDSHIELD WIPER/WASHER. Horn Blows when Unlocking Vehicle. The customer states that the vehicle horn sounds briefly when unlocking the vehicle or opening the door. In some cases, the washers spray briefly on the windshield. Front Electronics Module (FEM) software error
B5116152018-11-05. Service bulletin. EQUIPMENT:OTHER:LABELS. "Affected vehicles in dealer inventory must not be retailed or delivered until the label is removed. Vehicles at ports of entry will be remedied prior to dealer delivery. On affected vehicles, there is an incorrect label regarding the appropriate engine oil. Affected vehicles can be identified with a ""Vehicle Comment"" in the DCS Warranty Vehicle Inquiry or ISPA Light. Remove the engine oil label (located in the front or rear of the hood)."
B3408142018-11-05. Service bulletin. POWER TRAIN:AXLE ASSEMBLY; WHEELS:HUB; SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC. Ticking Noise from Front Axle When Cornering. The customer may complain of a ticking noise from the front axle when cornering, maneuvering, parking or pulling away from a parking space. The noise can be heard as a light metallic ticking from the front outer cornering wheel. Movement between the brake disc and wheel bearing hub.
B3203142018-11-05. Service bulletin. SERVICE BRAKES, HYDRAULIC:POWER ASSIST; STEERING; STEERING:HYDRAULIC POWER ASSIST SYSTEM; STEERING:ELECTRIC POWER ASSIST SYSTEM. Power-Assisted Steering Failure. The power-assisted steering fails with a warning lamp in the instrument cluster or a check control message in the Central Information Display. In some cases, the Dynamic Stability Control warning lamp (DSC) in the instrument cluster may also be illuminated. Failure of the power-assisted steering may be caused by various software-related issues. The following codes may be stored in the fault memory of the Electric Power Steering (EPS): Scenario 1: 0x4823E1 Scenario 2: 0x4823CB/0x4823CC Scenario 3: 0x4823D2 and/or 0x4823EC Scenario 4: 0x48239C (DSC warning lamp lights up in the instrument cluster) Scenario 5: No communication with the EPS is possible (not accessible using diagnostics) Scenario 6: 0x4823EE and 0x4823C2

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