2022-2024 BMW i4 Trunk Groaning Noise TSB SIB 51 18 23

Symptoms

Owners of 2022-2024 BMW i4 vehicles may experience a distinct "A groaning noise is heard from the trunk when driving on rough roads." This BMW i4 trunk groaning noise is typically noticeable when the vehicle encounters uneven surfaces or bumps.

Diagnosis / Trigger Conditions

The groaning noise is directly linked to the interaction between the trunk lid's wedging element and the corresponding stop pad on the vehicle body. The root cause is an unfavorable gap tolerance in this area. This condition becomes apparent during driving on rough or uneven roads, where the movement of the trunk lid can cause friction and the resulting noise. BMW has also provided a video, V51 09 23, to aid technicians in identifying the specific noise.

Repair Procedure Summary

BMW Service Information Bulletin SIB 51 18 23 outlines two distinct repair procedures, depending on the vehicle's production date:

For Vehicles Produced Up to January 20, 2023

For these vehicles, the repair involves cleaning and lubricating the trunk lid wedging element. Technicians will first clean the wedging element on the trunk lid using a mixture of denatured alcohol and water with a clean rag. Following cleaning, the wedging element will be lubricated with Berucoat AK 978. The trunk lid must remain open for eight minutes to allow the lubricant to dry properly.

For Vehicles Produced After January 21, 2023

For newer vehicles, the solution involves adjusting the trunk lid. Technicians are instructed to follow specific repair instructions detailed in the ISTA/AIR system, specifically procedure 41 62 014, to correct the trunk lid alignment and eliminate the BMW i4 trunk groaning noise.

Required Tools or Parts

For vehicles produced up to January 20, 2023, the following part is required:

• Part Number: 83 19 2 358 109
• Description: Anti squeak paint Berucoat AK 978 (100 ml)

This anti-squeak paint is essential for lubricating the trunk lid wedging element to resolve the groaning noise. The bulletin notes that this repair is considered "THIS REPAIR IS MOBILE FRIENDLY," indicating it might be performed with minimal specialized equipment.

Owner Action

If you own a 2022-2024 BMW i4 and are experiencing a BMW i4 trunk groaning noise when driving on rough roads, it is recommended to schedule an appointment with your authorized BMW dealer. The dealer will diagnose the issue and perform the appropriate repair based on your vehicle's production date. This repair is covered under the terms of the BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks.

NHTSA ID: 11006732