![]() What I find interesting is that the majority of Jeeps with this dilemma seem to be 2011 Jeep Grand Cherokees, not Liberty models. Problems with the blend door actuator resulted in various Jeep blend door recalls, including the Jeep Liberty heater core recall for 26 units in 2012. When this happens, the blend door loses its ability to change the air temperature inside your cabin, causing your heater to seem like it has stopped working. It is also naturally subject to fail at some point – like in any other vehicle. This component controls the air temperature blowing through the vents and into the cabin. One other significant part of your Jeep’s cooling system is the A/C blend door actuator. Outside of these exceptions, always assume that the radiator is hot and that its fans can kick on at any time (even if you have taken the key off the ignition). The only instance you can add coolant through the radiator cap would be one of two things – either you suspect the hose going from the reservoir to the radiator is clogged, or the radiator cap is ice cold. Seeing no coolant in the overflow reservoir would automatically indicate low coolant levels.Ī word to the wise: If there is no coolant in your overflow, refill the radiator by adding more coolant through the reservoir and never directly through the radiator cap. To check on your Jeep’s coolant level, simply take a peek at the overflow reservoir, which connects to the radiator (view on Amazon) through a tube coming from the right side of the radiator cap. The reverse would happen when your engine runs low on coolant and would come across as your Jeep heater not working. So long as this ratio and the manufacturer-recommended coolant capacity are met, your vehicle’s heat transfer in and cooling system should function seamlessly. The ratio of antifreeze to water the coolant has is typically 50:50. Like any other vehicle, your Jeep uses coolant to cool down your engine in warm weather and blow warm air into your car through the heater core during winter. If they are not, it would mean one of three things – the engine coolant is not circulating correctly, air is in the lines, or your heater core needs a flush. A warm engine should mean heater hoses that are warm to the touch as well. Otherwise, you would end up with a wet floorboard or a non-functional heater along with one of these signs:Įven without these indicators, it would be clever and pre-emptive to check the heater hoses for heat. Since the heater core (view on Amazon) is responsible for balancing heating actions inside your Jeep, it is crucial to keep it clog-free. Heater Core DifficultiesĬomparable to compact radiators, a heater core is part of the cooling system that serves as the passageway for hot coolant and is usually of brass or aluminum tubing material. Reasons Your Jeep Heater Does Not Work 1. But ultimately, taking your Jeep to a licensed mechanic or technician would be the best course of action if these recommendations do not help solve your problem. This guide aims to give you the right tools and knowledge of the most prevalent causes of this issue. In reality, there are hundreds of things that could lead to a car heater going bad. Note that this list isn’t exhaustive and only covers common reasons behind your Jeep heater not working. This article will go over the usual triggers of a non-working Jeep heater and how to fix them.īelow are 13 of the most common reasons behind your Jeep Heater not working that you should be aware of: And while Jeeps are often used in a top-down fashion, it is equally important to ensure its in-cabin features – like its A/C and heating system – are functional. There are many reasons behind a Jeep heater not working, including issues with the heater core, blend door actuator, and electrical components. Disclosure: We may get commissions for purchases made through links in this post.
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