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SIB 17 01 20: Low-temperature cooling system additive service action
Low-temperature cooling system additive service action on B58/N63 engines (2019–2020); BMW explains the cause and the approved repair.
BMW service bulletin · NHTSA ID 10176365 · May 2020 · also written SI B17 01 20, B170120
What it covers
A service bulletin tells BMW technicians how to diagnose or fix a known issue. It is not a recall: a repair under a bulletin is normally paid by the owner unless the car is still under warranty or a warranty extension applies.
SERVICE ACTION - ADD SILICONE BOOSTER TO LOW TEMP COOLING SYSTEM: The coolant in the low temperature cooling system may not have sufficient coolant corrosion protection.
Details
| Bulletin number | SIB 17 01 20 Also written: SI B17 01 20, B170120, 17 01 20, SIB-17-01-20, SI B170120 |
|---|---|
| NHTSA ID | 10171486, 10172492, 10176365 (revisions) |
| Document IDs filed | B170120 |
| Type | Service bulletin |
| Date | (first filed Jan 2020) |
| Models | X5, X6, X7 |
| Model years | 2019–2020 |
| Chassis | G05, G06, G07 |
| Engines | B58, N63 |
| Component (NHTSA) | Engine And Engine Cooling |
Model, year and engine coverage comes from NHTSA's records. Not every car in this range is affected; the official document lists the exact production dates and conditions.
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Source: NHTSA Manufacturer Communications (public data). BimmerBench is not affiliated with BMW or NHTSA. The title and description above are our own plain-English summary; the full bulletin is BMW's document, linked above.