BMW X5 2021–2024 — technical service bulletin
Bulletin B120623 · NHTSA communication 10242884 · issued Sep 20, 2023
Technical service bulletin
communication type
Engine and Engine Cooling
component
2021–2024
model years
12
vehicle entries
Official summary
The engine malfunction warning is illuminated and one or more of the following faults are stored in theDME: 034D63 - Exhaust switchable cam follower, system: continuous deactivation, maximum number of switchingerrors exceeded 035601 - Exhaust switchable cam follower 1, electrical: cable break 035604 - Exhaust switchable cam follower 2, electrical: cable break 034BBF - Exhaust switchable cam follower, system: switching errors
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.