Coolant leak from low temperature cooling circuit (N63R)
BMW technical service bulletin B170617 for 2019-2020 BMW X5, 2017-2020 BMW 530I and 2016-2019 BMW 750LI and others.
- Bulletin number
- B170617
- Component
- Fuel system, gasoline
- Summary
- COOLANT LEAK FROM LOW TEMPERATURE COOLING CIRCUIT (N63R): This Service Information Bulletin (Revision 5) replaces SI B17 06 17 dated June 2019. Traces of coolant leaking from the expansion tank of the low temperature cooling system. Coolant in the low temperature cooling circuit may also have an acrid smell and discoloration (1). Aluminum corrosion in the charge air intercoolers or in the radiator for the low temperature cooling is causing an unfavorable chemical reaction to the coolant.
Vehicles covered
- BMW X5 2019-2020 20192020
- BMW 530I 2017-2020 2017201820192020
- BMW 750LI 2016-2019 2016201720182019
- BMW X7 2019-2020 20192020
- BMW 540I 2017-2020 2017201820192020
- BMW 750I 2018-2019 20182019
- BMW 740I 2017-2020 2017201820192020
- BMW 530E 2018-2020 201820192020
- BMW 740LI 2016-2017 20162017
- BMW M550I 2017-2020 2017201820192020
- BMW 540D 2018-2020 201820192020
- BMW 740E 2017-2019 201720182019
- BMW M760I 2017-2020 2017201820192020
- BMW C 400 X 2018 2018
- BMW F800 R 2017 2017
- BMW B7 Alpina 2018-2020 201820192020
- BMW 745E 2020 2020
VIN decoder
See the problems and recalls for an exact car
Buying a used BMW X5?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history