BMW i8 coolant issues: Low coolant warnings. Engine overheated. No heat in the cabin.

UPDATE: NewTIS has been closed. Service Manual data is no longer free. DIY maintain your BMW at your own risk.    • BMW shut down NewTIS. DIY'ers beware!   UPDATE: NewTIS has been closed. Service Manual data is no longer free. DIY maintain your BMW at your own risk.    • BMW shut down NewTIS. DIY'ers beware!   If you have a low coolant error or high temperature warning on the iDrive of your BMW i8, this information will be useful. The most common issue with the coolant system in the i8 is the coolant level sensor starts to degrade and needs to be replaced. There is a technical service bulletin (TSB) for the replacement of this part so that your mechanic can replace it properly. SIB-17-03-18 provides guidance to the technician in order to accomplish the replacement of the parts necessary to no longer display Low Coolant warnings: Remove coolant, replace engine coolant expansion tank and wires/harness with connector, and bleed the system. Cooling Water Expansion Tank: Part # 17-13-7-640-831 Repair Cable: Part # 61-11-9-312-324 Coolant: Part # 82-14-1-467-704 This video also discusses how the coolant systems work in the i8. Two circuits, a high temperature and low temperature circuit, cool different items. These include radiators, electric coolant pumps, expansion tanks, the range extender machine electronics or REME, the water cooled throttle valve, the high voltage starter motor generator, the bypass valve for the transmission oil cooler, the transmission oil cooler, the electronic machine electronics or EME, the electrical machine or front motor, the electric fan, the map thermostat, the mechanical coolant pump, the combustion engine, the exhaust turbocharger, the engine oil cooler, the coolant temperatures sensor, the heat exchanger, the changeover valve and the auxiliary electronic heater. If any of these parts fail, you can get a low coolant warning top up error on the iDrive, engine overheated error, no heat in the car cabin, or even a drivetrain failure where you get a vehicle cannot be restarted message. --- Here are some of the videos I mentioned: How to Open the BMW i8 Hood    • BMW i8 Hood/Bonnet Lift and Latch - check ...   Radiator Coolant Vacuum Bleeding    • Radiator Coolant System (Bleeding & Fillin...   What is valvetronic?    • What Is Valvetronic? BMW's Innovative Thro...   --- Here are some links to products mentioned in this video, for your convenience: Schwaben 003466SCH01 Coolant Refill/Air Purge Tool (REQUIRES Air Compressor capable of 90PSI): https://amzn.to/362IFAk Service manual entry explaining the thermostat: https://www.newtis.info/tisv2/a/en/i1... Working on the cooling system: https://www.newtis.info/tisv2/a/en/i1... The coolant fill process: https://www.newtis.info/tisv2/a/en/i1... The coolant bleed process: High Temp: https://www.newtis.info/tisv2/a/en/i1... Low Temp: https://www.newtis.info/tisv2/a/en/i1... More service manual coolant articles: https://www.newtis.info/tisv2/a/en/i1... –––––––––––––––––––––––––––––– Since many folks have asked if they could send me money, I decided to make online payment available. If you'd like to send monetary support towards helping me maintain and grow my channel, please use one of the links, below. I do appreciate the monetary support but there is no obligation to pay me. https://www.paypal.me/patsgarageonline https://www.venmo.com/patsgarageonline I’ve been using Cash App to send money and spend using the Cash Card. Try it using my code and we’ll each get $5. BQRLSDM https://cash.app/app/BQRLSDM Visit http://patsgarageonline.com for more of my videos and information. #ad The equipment I use to shoot my videos: GoPro Hero 8 Black: https://amzn.to/2U0ehzM GoPro Hero 7 Black: https://amzn.to/32Nzi2W Hero 7/8 Mic Adapter: https://amzn.to/31KVA41 Ulanzi Hero 8 housing: https://amzn.to/2U0ehzM Forevercam Hero 7 housing: https://amzn.to/2JneF5Y Wireless Mic: https://amzn.to/36RoC61 Mini Tripod with Ball Head: https://amzn.to/2urG7uG On-Camera LED light: https://amzn.to/2NUyVxY –––––––––––––––––––––––––––––– Disclaimer: Pat's Garage Online assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. –––––––––––––––––––––––––––––– End Screen Music: Copyright free music from: Music by @ikson Song: Dreamer Artist: Ikson   / dreamer-free-download      / ikson   As an Amazon Associate I earn from qualifying purchases.