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Service bulletins for the 2021 BMW X4

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.

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

By type

By component

Bulletins, newest first
B4107222023-05-01. Service bulletin. STRUCTURE:BODY:ROOF AND PILLARS. While driving the vehicle on normal roads at 10mph and above, a cracking sound from the top of the B-pillar(s) is heard.
B8414222023-01-30. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). Customer is shown an incorrect GPS location in the vehicle (i.e., Nav Map, coordinates).
B6524222023-01-30. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT:VIDEO (TOUCH)SCREEN/MONITOR/UNIT. Visible white spots on the edge of the central information display (CID) from being touched with a finger.
B6308222023-01-30. Service bulletin. STRUCTURE:BODY:DOOR. Uneven ambient lighting emission (bright spots/dark spots) on the door trim panel.
B6501222023-01-03. Service bulletin. AIR BAGS. A check control message for the restraint system appears. In the instrument cluster, the red air bag warning light lights up permanently. One of the following fault codes is stored in the ACSM (air bag control unit): 930949 - Knee airbag, driver: short circuit to negative terminal 93094F - Knee airbag, front passenger: short circuit to negative terminal 93094C - Knee airbag driver's side: Resistance too great 930952 - Knee airbag, front passenger: Resistance too great.
B4107222023-01-03. Service bulletin. STRUCTURE. While driving the vehicle on normal roads at 10mph and above, a cracking sound from the top of the B-pillar(s) is heard.
B6519222022-12-12. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. The customer complains that the radio stations change by themselves.
B6512222022-12-12. Service bulletin. EQUIPMENT:ELECTRICAL:ANTENNA; STRUCTURE:BODY:ROOF AND PILLARS; UNKNOWN OR OTHER. The seal of the roof-mounted antenna housing is separating from the vehicle.
B6112222022-12-12. Service bulletin. VISIBILITY. After opening the vehicle with the radio remote control and changing the profile, the exterior mirror settings are lost.
B5117222022-12-12. Service bulletin. FORWARD COLLISION AVOIDANCE; VISIBILITY; LANE DEPARTURE; STEERING; ELECTRICAL SYSTEM. Due to the semiconductor supply, the Local Interconnect Network module in either of the exterior mirrors was switched to another controller. That one provides an imprecise voltage measurement, which the main controller interprets as a fault. For the driving cycle, the customer may lose the display in either mirror and the Lane Change Warning function and, if installed, other functions such as- Side collision warning; Lane Change Assistant; Steering and Lane Control Assistant; Emergency Lane Assistant Hands Off 60 Assistant.
B1603222022-12-12. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. The Check Engine Light is on (MIL). After checking faults and diagnosis there is raw fuel found in the charcoal canister and the NVLD pressure switch (in R/R wheel well). Possible faults stored in the DME: 190F08 - Fuel tank venting system: Malfunction 191C02 - Fuel tank venting system,2. discharge point: Malfunction The vent line inside the fuel tank is disconnected.
B6627192022-10-31. Service bulletin. LANE DEPARTURE. The Lane Change Warning (LCW) yellow triangle symbol on either one, or both the exterior side view mirrors does not illuminate to alert the driver when it should.
B6624192022-10-31. Service bulletin. EQUIPMENT:ELECTRICAL. Vehicle cannot be opened or closed using comfort access, engine start is not possible, and the vehicle may not start when placing the key against the steering column.
B6404222022-10-31. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. An interference noise (groaning noise) can be heard from within the heating and air-conditioning unit in the center of the instrument panel.
B5404212022-10-31. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY. The front sunroof glass seal has shrunk, creating a gap which can cause wind noise or excess water entry.
SIB6509222022-10-17. Service bulletin. EQUIPMENT:ELECTRICAL. The sound output intermittently drops out entirely. This can be reproduced with all audio sources as well as telephone and voice output.
SIB0112192022-10-17. Service bulletin. STRUCTURE; EQUIPMENT. Component-Specific Limited Warranty Extension. For the eligible vehicles, BMW of North America, LLC (BMW NA) is extending the limited warranty for the vehicle's Radiator Grille Upper and Lower Active Air Flaps to: 15 years/150,000 miles as determined by the vehicle's original in-service date. 1. Air flap control (link) active, upper (G12, G30 and G32) 2. Air flap control (drive), active, upper 3. Air flaps, upper (assembly) 4. Air flaps, lower (assembly) For eligible MY 2017 BMW 530i (B460) vehicles that are currently registered in the State of California (CA) or a State that has fully adopted the State of California PZEV/SULEV regulation (CT, ME, MD, MA, NJ, NY, RI, and VT), the standard emission-related coverage for the Radiator Front Grille Air Vent Flaps is15 years/150,000 miles. This component-specific limited warranty extension applies to defects in materials or workmanship.' This coverage is subject to the same vehicle eligibility requirements, limitations, and exclusions that apply to the BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks. A check control message or MIL (Malfunction Indicator Lamp) may be illuminated with faults stored related to the upper and/or lower active air flap(s). Potential causes include: Faulty upper air flap link (G12, G30, G32) Faulty upper air flap actuator (G01, G02, G12, G30, G32) Faulty upper flap assembly (G01, G02, G12, G30, G32) Faulty lower air flap assembly (G01, G02, G12, G30, G32) Software error in the DME affecting the upper flap (G01, G02 only) Or: Upon visual inspection, the passenger side upper active air flaps are either stuck open or closed, and they will not move and there are no faults stored for the active air flaps (With no check control message or check engine light or displaying)
SIB0109212022-10-17. Service bulletin. EQUIPMENT. Component-Specific Limited Warranty Extension. For the eligible vehicles, BMW of North America, LLC (BMW NA) is extending the limited warranty for the vehicle's Leak Diagnosis Module with hose assembly (NVLD, shown) to: 15 years/150,000 miles as determined by the vehicle's original in-service date. For eligible MY 2017 BMW 530i Sedan and xDrive (B460) vehicles that are currently registered in the State of California (CA) or a State that has fully adopted the State of California PZEV/SULEV regulation (CT, ME, MD, MA, NJ, NY, RI, and VT), the standard component-related coverage for the NVLD is 15 years/150,000 miles. This component-specific limited warranty extension applies to defects in materials or workmanship. This coverage is subject to the same vehicle eligibility requirements, limitations, and exclusions that apply to the BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks. Over time, the Leak Diagnosis Module (NVLD) (with connected hose) component material may fail, this can create a fine leak to develop in the Evaporative Emission Control System (EVAP). Should this occur, corresponding fault codes will be stored in the DME memory and the MIL (Malfunction Indicator Lamp) will illuminate.
SIB5105222022-08-22. Service bulletin. SUSPENSION; SUSPENSION:FRONT:MACPHERSON STRUT. BMW AG has issued a Delivery Stop (effective March 28, 2022) on certain Model Year 2022 BMW vehicles that were produced between March 1, 2022 and March 8, 2022 because the torsion struts may not have been installed at the plant. Do not deliver to a customer, a New, Certified Pre-Owned or Used vehicle subject to a Delivery Stop, until the vehicle is repaired. Do not use or sell replacement equipment/parts subject to a Delivery Stop.
SIB6624192022-08-22. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Vehicle cannot be opened or closed using comfort access, engine start is not possible, and the vehicle may not start when placing the key against the steering column. Note: Opening, closing and starting via the BMW Digital Key or the Digital Key Card are not affected.
SIB6501222022-08-22. Service bulletin. AIR BAGS; ELECTRICAL SYSTEM. A check control message for the restraint system appears. In the instrument cluster, the red air bag warning light lights up permanently. One of the following fault codes is stored in the ACSM (air bag control unit): 930949 - Knee airbag, driver: short circuit to negative terminal 93094F - Knee airbag, front passenger: short circuit to negative terminal.
SIB1701222022-07-18. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. The Check Control message below appears even though the coolant level is not below minimum when the engine is cold. Check Control message (ID 166): Top up coolant.
SIB0901212022-07-18. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE; ELECTRICAL SYSTEM:SOFTWARE. BMW offers a new special ISTA Installation made available for Roadside Assistance / Mobile Service technicians. The new ISTA Version is also able to be used in case of a Remote Software Upgrade (RSU) programming failure to get the customer car reprogrammed on site. In case of a Remote Software Upgrade failure, the engine start is prevented for safety reasons until the vehicle is programmed correctly. Most of the errors occur when only one control unit fails to program correctly.
SIB6606202022-07-05. Service bulletin. ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SENSORS; ELECTRICAL SYSTEM:ADAS:HUD:CAMERA/SENSOR; ELECTRICAL SYSTEM:ADAS:BLINDSPOT:SENSORS; ELECTRICAL SYSTEM:ADAS:DRIVER MONITORING:CAMERA/SENSOR; ELECTRICAL SYSTEM:ADAS:HILL DESCENT ASSIST:SENSOR. The functionality of the right front SRR sensor could be reduced which would display the "Driving Assistance" Check Control Message.
SIB6513122022-07-05. Service bulletin. ELECTRICAL SYSTEM. The Headunit High (HU-H), also called NBT, began replacing the Car Information Computer (CIC) on certain MY2013 vehicles with option 609 (as of 7/2012 production). This uses map North America NEXT. The Headunit High 2 (HU-H2), also called NBT-EVO, superseded the NBT HU and was introduced in 3/2014. This uses map North America EVO. The Headunit High 4 (HU-H4, also called MGU21) superseded the MGU starting with certain MY2021 vehicles with option code 6U3 Live Cockpit Professional. This uses map North America JOY. The ENTRY Media/Navigation (HU-B) is the low line business version of the navigation system and was introduced in 3/2014. This uses map North America ROUTE. The ENTRY NAV EVO (HU-B2) replaced Entry Media/Navigation as the low-line business version and was introduced in certain MY2018 vehicles. This uses map North America WAY.

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