I01 rex misfires at high altitudes using winter-blend fuel
BMW technical service bulletin B120920 for 2014-2020 BMW I3, 2021 BMW R 1250 RT and 2021 BMW R 1250 R.
- Bulletin number
- B120920
- Component
- Engine and engine cooling
- Summary
- I01 REX MISFIRES AT HIGH ALTITUDES USING WINTER-BLEND FUEL: The check engine light (MIL) is displayed, and in some cases the range extender (REx) engine will run rough for about 1 to 2 seconds during cold start.
Owners of these vehicles have filed 19 complaints in the engine category.
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