ELECTRICAL SYSTEM:STARTER ASSEMBLY; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE
2021 BMW 740I
Recalls, owner-reported complaints, investigations and safety data
Data refreshed
Overview
Our database contains 1 NHTSA owner-reported complaint for the 2021 BMW 740I, most frequently naming the driver assistance category. 2 safety recalls have been issued covering this model year; and 157 manufacturer communications are on file.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Complaint activity over time
When owners filed reports about this model year
Not enough dated records to plot a meaningful trend — 1 month of data.
What owners report
Complaints grouped by the component NHTSA recorded
- Driver assistance1100.0%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Safety recalls
2 campaigns cover this model year
Recalls apply to specific vehicles, not to every vehicle of a model year. Check your VIN with NHTSA or your manufacturer's dealer to confirm whether a recall affects your vehicle.
Check a VIN on NHTSA.govBACK OVER PREVENTION: SENSING SYSTEM: CAMERA; BACK OVER PREVENTION:SOFTWARE
Recent owner complaints
Reports submitted to NHTSA, shown in the owner's own words
I am filing this complaint regarding an ongoing safety issue with my 2021 BMW 740i involving the lane departure warning system, lane keep assist, and adaptive cruise control, all of which have stopped functioning properly. These features are critically tied to the windshield-mounted KAFAS camera, which I’ve now been told needs to be replaced. Initially, the BMW dealership attributed the issue to a software problem and charged me $500 for a software update. After the update, the driver assist systems remained non-functional. The dealership then diagnosed a failure with the front camera assembly and is now quoting me approximately $3,000 for replacement of the windshield and camera module. I have reviewed NHTSA Technical Service Bulletin SIB 66 08 23 (NHTSA ID: MC-10236236-9999), which outlines this exact issue, suggesting that BMW is aware of system limitations and hardware failures in this critical safety feature. However, this has not resulted in a recall or manufacturer-paid repair, despite the significant safety risk involved. I am requesting that NHTSA investigate this issue for the 2021 BMW 740i and similar BMW models equipped with the same KAFAS camera system. The sudden failure of key driver assistance systems—especially lane departure warning and adaptive cruise control—can lead to dangerous driving conditions, particularly on highways. I believe a recall or service campaign should be initiated requiring BMW to cover the cost of diagnosis and camera replacement due to the safety-critical nature of these systems. Please consider this complaint as a formal petition for further investigation and potential recall.
- NHTSA ID
- 11672121
- Incident
- May 28, 2025
Manufacturer communications
A bulletin sent by a manufacturer to its dealers. Not a recall, and repairs are not necessarily free.
ELECTRICAL SYSTEM; ENGINE
The manual starting of electronic engine oil level measurement from inside the vehicle, usually afterperforming an engine oil service task, is inoperative or it may lock up at between a 15% to 30% completionrate.
ENGINE
The EVAP systems purge (vent) valve limited warranty for defects in materials or workmanship has been extended to 15 years / 150,000 miles as determined from the original in-service date.
SUSPENSION
THE FRONT AND REAR AIR SUSPENSION STRUT ASSEMBLIES LIMITED WARRANTY FOR DEFECTS IN MATERIALS OR WORKMANSHIP HAS BEEN EXTENDED TO 8 YEARS /80,000 MILES AS DETERMINED FROM THE ORIGINAL IN-SERVICE DATE.
STRUCTURE:BODY
A check control message is displayed, indicating that the parking assistance systems have limitedfunctionality due to errors detected within PDC sensors. The warning indicates parking assistance featureshave limited functionality while the errors continue to be detected. Following faults may be stored 8031BA Ultrasonic Sensor Rear Side Left Software Error 8031CO Ultrasonic Sensor Rear outer left Software Error 8031AE Ultrasonic Sensor Rear Outer Right Software Error 8031A8 Ultrasonic Sensor Rear Side Right Software Error 8031B4 Ultrasonic Sensor Rear Middle Right Software Error 8031C6 Ultrasonic Sensor Rear Middle Left Software Error 8031CD Ultrasonic Sensor Voltage Supply Sensors Back: Short Circuit 8031CC Ultrasonic Sensor Voltage Supply Front: Short Circuit 8031CA Ultrasonic Sensors Front Extraneous Noise
ENGINE
VOLUNTARY EMISSIONS RECALL 24E-A02: VALVETRONIC
ENGINE AND ENGINE COOLING
BMW AG has issued a Delivery Stop (effective April 12, 2024) on certain Model Year 2023 - 2025 BMW vehicles that were produced between July 21, 2021, and April 11, 2024.
Manufacturers file copies of the bulletins they send to dealers with NHTSA. These often describe diagnostic or repair procedures for a known condition. They are not recalls: repairs described in a bulletin are usually only free if the vehicle is still under warranty or the manufacturer has extended coverage.
Compare model years
Complaint and recall counts across every year of this model
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers. Older model years have had longer for reports to accumulate.