Toyota Avensis: Heater Not Working Diagnosis May 02, 2019Low Coolant. While not having enough coolant may make your engine run hotter, it can also cause your Avensis to not be able to create enough heat. Is there isn’t enough line pressure, due to low coolant, then the heater core will not be able to get any coolant itself. You can verify this by checking the coolant level by taking a peek at the Explore further Heater Problems - Avensis Club - Toyota Owners Club - Toyota wwwtaownersclubWELCIA-BHG (SINGAPORE) PTE. LTD. (201705663G) - SingawwwusinessInternational Day of the Girl Lesson Plan | MY HEROmyheroRecommended to you based on what's popular • Feedback Related searches for toyota avensis verso wiring heater toyota avensis versoused toyota avensis2009 toyota avensistoyota avensis estatetoyota avensis automatictoyota avensis 2010toyota avensis specificationstoyota avensis wagon