TSB B170122 — BMW Service bulletin
B170122 is a service bulletin on file with NHTSA for 2 BMW models, 2017–2022 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. The Check Control message below appears even though the coolant level is not below minimum when theengine is cold. Check Control message (ID 166): Top up coolant.
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years B170122 names
Every document filed under B170122
| Document ID | Filed | Type |
|---|---|---|
| B170122 | January 29, 2024 | Service bulletin |
What B170122 covers
Engine — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB B170122?
B170122 is a service bulletin filed with NHTSA by BMW, covering 2 BMW models across the 2017–2022 model years. NHTSA's summary reads: The Check Control message below appears even though the coolant level is not below minimum when theengine is cold. Check Control message (ID 166): Top up coolant.
Which vehicles does B170122 cover?
NHTSA's file names BMW X3 (2017–2022); BMW X5 (2019–2021). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.
Is TSB B170122 a recall, and is the repair free?
No. B170122 is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.
How do I get the full text of B170122?
Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under B170122, its date, and NHTSA's own summary from the public file.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under B170122. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.