Service bulletins for the 2018 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.
81 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Glass, wipers and mirrors are shown. Show all
| B510819 | 2024-02-01. Service bulletin. VISIBILITY:POWER WINDOW DEVICES AND CONTROLS; ELECTRICAL SYSTEM. The basic conditions for initializing the power windows are not met. |
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| B540421 | 2023-11-01. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY; STRUCTURE. This situation can result in two customer complaints: 1. Wind noise 2. Excess water entry |
| B540421 | 2022-10-31. 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. |
| B640518 | 2018-10-09. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:FAN/MOTOR. EXCESS NOISE WHEN DEFROST BLOWER IS AT MAX: Loud, rushing, wind noise is heard from ventilation outlets, as shown in video, https://tinyurl.com/V640418 when defroster blower is set at maximum speed. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.