Home › Service bulletins › SIB 17 03 20

SIB 17 03 20: Coolant line leak

Coolant line leak on BMW G01/G02/G05/G07 and other models (2018–2020); BMW gives an inspection and repair procedure.

BMW service bulletin · NHTSA ID 10176366 · May 2020 · also written SI B17 03 20, B170320

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.

COOLANT LINE QUICK DISCONNECTS LEAK IN LOW TEMPERATURES AT OR BELOW -15Ë?C (5Ë?F): The coolant reservoir in the high or low temperature cooling system is low There may be a coolant leak under the vehicle There may be a check control message (ID166) to top up coolant The low temperature cooling system have a low level warning indicator.

NHTSA's summary of this communication (excerpt)

Official document on NHTSA (PDF) →

Details

Bulletin numberSIB 17 03 20
Also written: SI B17 03 20, B170320, 17 03 20, SIB-17-03-20, SI B170320
NHTSA ID10176366
Document IDs filedB170320
TypeService bulletin
Date
ModelsX3, X4, X5, X7
Model years2018–2020
ChassisG01, G02, G05, G07, F97, F98
EnginesB46/B48, B47, B58, N63, S58
Component (NHTSA)Electrical System
Engine And Engine Cooling
Fuel System
Gasoline
Hydraulic
Lane Departure
Service Brakes

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.

Related bulletins

  • SIB 12 06 26 Fault codes software update Fault codes software update on BMW G05/G06 models (2023–2026); BMW released a software update. Service campaign · Jun 2026
  • SIB 01 05 20 EGR cooler warranty extension EGR cooler warranty extension on B46/B48/B47/B58/N20/N47/N55/N57/N63 engines (2014–2018); BMW extended the warranty on this part for eligible cars. Warranty extension · Aug 2025
  • SIB 16 01 24 Engine no-start Engine no-start on BMW G05/G06/G07/G60 and other models (2023–2025); BMW repairs affected cars free under a service campaign. Service campaign · Nov 2025
  • SIB 01 16 24 Telematics unit warranty extension Telematics unit warranty extension on BMW G11/G12/G20/G30 and other models (2018–2020); BMW extended the warranty on this part for eligible cars. Warranty extension · Jan 2025
  • SIB 61 02 25 Battery failure Battery failure on B58/N63 engines (2024–2025); BMW repairs affected cars free under a service campaign. Service campaign · Apr 2025
  • SIB 12 05 25 Electrical system corrosion Electrical system corrosion on BMW G05/G07/G20 models (2024); BMW repairs affected cars free under a service campaign. Service campaign · May 2025

Before you pay: check your VIN for recalls

Some failures are covered by a safety recall or a warranty extension. Our free recall check lists NHTSA recalls for your car's model and year.

Check recalls by VIN →

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.

Want a heads-up when prices or bulletins change for your G01/G02/G05 or other listed model?

About one short email a week, with BMW news. Unsubscribe anytime.