M340i

132 service bulletins filed with NHTSA for this model year

• Apr 15, 2025STRUCTURE:BODYB010325

  The Radiator Grilles Lower Active Air Flap Assembly limited warranty for defects in materials and/or workmanship has been extended to 15 years / 150,000 miles as determined from the original first in-service / delivery date.

• Apr 9, 2025AIR BAGSB720225

  The Supplemental Restraint Systems (SRS) Front Passenger’s Seat Occupancy Capacitive Interior Sensor (CIS) Mat for defects in materials and/or workmanship that causes a false seat occupancy alert to occur has been extended to 10 years / 120,000 miles as determined from the vehicle's original in-service / first delivery date.

• Jan 11, 2024ELECTRICAL SYSTEMB611305

  The electrical system of BMW vehicles has been subject to an ongoing development process over the last few years. This has led to increased demands being placed on the battery. This document covers important information for the dealer on how to handle “discharged battery” complaints.

• Oct 13, 2023SERVICE BRAKES, HYDRAULICB340714

  Functional noises (squealing/honking) when braking shortly before the vehicle comes to a stop. CAUSE Material-

• Aug 1, 2023ENGINE AND ENGINE COOLINGB240323

  ?A software error may cause an unwanted pressure pulsation in the transmission during a "Remote Engine Start."

• Jun 1, 2023EXTERIOR LIGHTINGB630821

  Headlight check control (CC) message 128 "High beam headlight failure" is displayed. The following fault codes are stored during a vehicle test: 80419A - Left high-beam headlight: Short circuit and/or 8041A5 - light outputs: Number of permitted short circuit cycles exceeded

• Jun 1, 2023EXTERIOR LIGHTING:TAIL LIGHTSB630321

  Condensation is present on the inner surfaces in one or both taillights (circled).

• Jun 1, 2023ELECTRICAL SYSTEM:SOFTWAREB240223

  BMW AG has issued an Emissions Recall (effective March 17, 2023) on a certain Model Year 2021 - 2023 BMW vehicles that were produced between June 16, 2020, and December 13, 2022. Due to a software failure, there is the possibility that the transmission does not go into "sleep mode" if the car is turned off.

• and 124 more

Source: NHTSA manufacturer communications (technical service bulletins).