TSB B840226 — BMW Service campaign
B840226 is a service campaign on file with NHTSA for 2 BMW models, 2020 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. Once the Telematics Module (TCB2) enters sleep mode, a BMW Data Services trigger for Remote Services(remote engine start, lock/unlock/climate conditioning) will not be able to reactivate the TCB2. Due to this issue, Remote Services will not function in the vehicle when parked…
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Worth checking your VIN against. B840226 is filed as a service campaign, which unlike an ordinary bulletin can mean free or reimbursed work when a vehicle qualifies. Ask a dealer using the document ID below, and check open recalls separately at nhtsa.gov/recalls.
Vehicles and model years B840226 names
Every document filed under B840226
| Document ID | Filed | Type |
|---|---|---|
| B840226 | July 10, 2026 | Service campaign |
What B840226 covers
Electrical — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB B840226?
B840226 is a service campaign filed with NHTSA by BMW, covering 2 BMW models across the 2020 model years. NHTSA's summary reads: Once the Telematics Module (TCB2) enters sleep mode, a BMW Data Services trigger for Remote Services(remote engine start, lock/unlock/climate conditioning) will not be able to reactivate the TCB2. Due to this issue, Remote Services will not function in the vehicle when parked…
Which vehicles does B840226 cover?
NHTSA's file names BMW X3 (2020); BMW X5 (2020). 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 B840226 a recall, and is the repair free?
B840226 is filed as a service campaign, not a recall — but this is the kind of communication that can mean free or reimbursed work if your VIN qualifies. Take the number to a dealer and ask. Recalls are separate and always free; check yours by VIN at nhtsa.gov/recalls.
How do I get the full text of B840226?
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 B840226, 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 B840226. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.