Once the engine achieves the right temperature, with help from the thermostat, it heats the coolant and water mix. YourMechanic All rights reserved. Once the engine reaches its operating temperature (generally about 200 degrees F, 95 degrees C), the thermostat opens, and the fluid starts flowing. But if the fan stopped working, that’s why heated air isn’t reaching the cabin of the car. If you notice that your thermostat gauge stays on the … Acura MDX - Heating AC - Indianapolis, Indiana. If there is anything you would like to add, please feel free to leave a comment below. Conclusion: Heat Not Working Nissan Altima. Check Latest Price. Ensure your heater’s coolant level is where it’s supposed to be and that the coolant isn’t contaminated. When a car’s heater is not working in the middle of winter, it can make your daily commute miserable and cold. Step 8 - The heater core is responsible for converting hot coolant into heated air, if this core becomes plugged it will not operate correctly. If the coolant level is low, the core isn’t working, or there’s air in the system, your car’s heater may not work. Some valves are controlled by vacuum. Is the heater completely separate from the AC Compressor and my … • A bad thermostat that isn’t allowing the engine to properly warm up. Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST. I would no doubt use him again. This is another common culprit, and may be interfering with the flow of coolant through the heater core. It goes without saying that a properly operating heating system is important. The heater may be doing its job. Checked for incoming resistance ground to the blower, from the dash control switch and it works. If a thermostat is stuck in the closed position, it will never allow coolant to circulate fully, so no heat for you. So, why isn’t your car’s heater working and what can you do to fix it? © Copyright 2020 Endgame360 Inc. All Rights Reserved. Price range for all vehicles. Or not if your car heaters are not working. Mazda Miata - Heating AC - Peoria, Arizona. With YourMechanic you can skip the auto shop altogether. Made with ♥ in Silicon Valley. The main job of a fuse is to protect the electrical circuits in your car from shorting or overloading; i.e., a fuse protects the wire or wires they are connected to from overheating and catching fire. If there are rust particles or other contaminants in the coolant, it could prevent the heating core from distributing heated air into the cabin. Peter charged us only $202, plus performed the work at our home. Created on: 2019-11-20. By doing so, it lets the engine warm up as quickly as possible, thus reducing engine wear, deposits and emissions. Fuses are rated by their amperage and are designed to blow or open when the current being drawn through them exceeds their design rating. Cables would bind and stick, causing all kinds of problems. Typically if you have air in the cooling system, then you have a leak that’s allowing coolant to escape and air to take its place. With the heating system in a vehicle, there are many problems that can arise. Heater not working? When the thermostat is worn out, it remains stuck in the open or shut position, which leads to either overheating or cool operation, respectively. If the fuse is okay, it may be time to replace the unit’s fan. The heater fan is also sometimes an issue. Most fans are audible when on, so if you don’t hear the fan running, then it’s most likely not … Failure of any of these components may result in the same symptom. If it doesn't, there is a problem within the system. And that’s a bigger problem than not having a heater. It will, but that’s simply a nuisance. Service Location. Before doing so, however, the mechanic will check the resistor, motor and fuse for proper operation. Coolant (AKA antifreeze) flows through the engine, absorbing heat from the rapidly-moving … customer ratings (59) $79.99 - $89.99. Book a mechanic to perform a thorough inspection as soon as possible. A problem with the switch which turns the fan on or off, might also be the source of … But I just realized today that that could also mean my heater is also broken. Diagnosing Airflow Problems Check all of the vents. You can remove it from the engine for testing. When a car heater doesn't work, the most common cause is low coolant. Simple maintenance can help you prevent future problems with your car’s heater.Â. If a device draws enough current to blow a fuse, you've probably got a problem somewhere else in the system that will cause the fuse to blow again, sooner or later. Our certified mobile mechanics can come to you now. If the coolant is where it should be, take a look at the fan. The heater in your vehicle isn’t like a furnace that you’d find in a house. Although a leaky or weak radiator cap might be to blame, it’s more likely there is a leak somewhere in the coolant system. Blower Motor or Resistor? He is very thorough and knowledgeable. Check that the thermostat is working as it should. A heater that's working properly should circulate air that's a toasty 75 to 100 degrees Fahrenheit. Be sure that air pressure is … The mechanic will pressure test your cooling system to determine where air is entering the system, and will then bleed the air pockets from the cooling system as per the manufacturer’s instructions. The mechanic will perform a thorough check of the entire heating system. But, using the info above about how and why a heater would fail can make it a lot easier. Check for blown fuses and replace them to restore normal functionality. Diesel Air Heaters. Our certified mobile mechanics come to you 7 days a week between 7 AM and 9 PM. Ken Mattson, owner of Len’s Automotive in Bellevue, Wash., says a car heater can stop working for a number of reasons, including: • A low antifreeze/water level in the radiator due to a leak in the cooling system. But, using the info above about how and why a heater would fail can make it a lot easier. He literally saved us thousands of dollars in repair costs. Make sure that the coolant in your vehicle’s system is clean and free of any rust or other debris. All power to every one of the electrical working parts of the car is supplied via fuses. The amount of hot air and which direction it blows are controlled by the buttons and switches on your dash, which direct the heater valves and the car’s blower fan. When the engine is cold, the thermostat doesn’t allow coolant to flow through the engine. Coolant doesn’t evaporate on its own. I would recommend him to anyone with a car issue, Nissan Altima - Heating AC - Houston, Texas. While the core may heat up just fine, without a fan to blow the heat away, your car will never warm up inside. A car's heater does not generate heat if the coolant level is low or restricted by buildup, if the water pump failed or if the thermostat is broken. SELECT VEHICLE. We just assumed it was how that particular car was manufactured. A blown fuse might just be the reason your car heater fan is not working. Thermostats can also get stuck open causing the engine’s temperature to stay low.  If the thermostat is the culprit, you may have bigger problems because the vehicle will start to overheat. Our certified mobile mechanics come to you 7 days a week between 7 AM and 9 PM. Matt was courteous and on time. Also, a nonworking heater will adversely affect the way your defroster does its job, which will in turn hinder visibility, limiting your ability to drive safely. This 12V heater is perfect for adding … These are: The cooling system; The heater core; The heater … Jeep Commander - Heating AC Inspection - Greensboro, North Carolina, He did a very good job with the inspection and explain everything to my understanding, nice job Leo 5 stars *****, Exhaust Gas Recirculation/EGR Valve Replacement, Emergency / Parking Brake Shoe Replacement, Heater is not working Inspection In Valley Village, CA, Heater is not working Inspection In Alhambra, CA, Heater is not working Inspection In Land O' Lakes, FL, Heater is not working Inspection In Largo, FL, Heater is not working Inspection In Bradenton, FL, Heater is not working Inspection In Chicago, IL, Heater is not working Inspection In Methuen, MA, Heater is not working Inspection In Taunton, MA, Heater is not working Inspection In Birmingham, MI, Heater is not working Inspection In Fairfield, NJ, Heater is not working Inspection In Elmont, NY, Heater is not working Inspection In Holbrook, NY, Heater is not working Inspection In New Holland, PA, Heater is not working Inspection In Jenkintown, PA, Heater is not working Inspection In Saint Hedwig, TX. With a pair of pliers to hold it securely, place it in water and see if it opens as it should at a given temperature. He replaced the Jaguar fuel pump like an expert, and then he diagnosed the VW bug ac compressor and fixed it on the spot. A more immediate issue is that a failing heater can prevent your defroster from blowing the warm air needed to clear ice and frost off your windshield so you can see the road ahead. Ensure that you have a full coolant level at all times because it helps the unit’s core to heat up. Having no working heater can be a potential safety hazard and you definitely don’t want to end up stranded in inclement weather. He explained to us exactly what services were needed on our vehicle to repair the air conditioner and provided us with an written estimate of the cost. When your vehicle’s engine has cooled down, open … If you have a low coolant level, make sure you don’t have any leaks in the system. The coolant itself could also be an issue. If that coolant is low or contaminated, you have a problem. If there is anything you would like to add, please feel free to leave a comment below. It also helps to keep your vehicle’s engine running smoothly. Checked for battery at the blower, when the car is running. In the latter, coolant circulates through the engine, absorbs heat, and dispels it into the outside air by way of the radiator. Rotated all the PDC relays around, they have the same ID, other than ABS pump. Get your car inspected at your home or office. We are so thrilled to have found Peter as our new mechanic. If you don’t hear the fan running, it may be your culprit. Incredibly nice and took the time to show me the problem, including comparison pictures between my unit and what a new unit should look like. Any fan can go bad, and it's a fairly easy replacement procedure. On top of that, if there’s no heat in the vehicle, it has no way to defrost the windows and mirrors to eliminate condensation and ice. When a furnace malfunctions, you replace the entire unit. A top-rated mobile mechanic will come to your home or office to determine the source and cause of the heater malfunction, and will then provide a detailed inspection report that includes the scope and cost of the necessary repairs. Check all belts and hoses to make sure they are properly attached and not leaking. They work by using the heat in the coolant system that circulates around the car's engine to cool it. Reasons your heating system isn't working. If you can’t hear it, first check the fuse to make sure it hasn’t blown. In some cases, the problem might have nothing to do with coolant: If your blower only works on the highest setting, your blower motor control module probably needs to be changed. So manufacturers switched to small electric motors called actuator to vary the blend/air mix door positions. Debris in the cooling system, such as rust particles or other goop, can potentially plug the heater core and block the flow of coolant. An air pocket in the heater core or a heater hose may be interfering with the flow of coolant through the heater core. The fan blows the heat away from the core and distributes it into the cabin of the car. When something goes wrong with the heating system in your car, the type of repair needed depends on what the exact problem is. Both the inlet and outlet return hoses should feel hot when the engine is at normal operating temperature and the heater … Car makers used to rely on cables to change the position of the blend door to regulate the amount of heat. He is also friendly, professional, and extremely honest. There are few things more annoying than jumping into your car on a freezing winter day only to discover that your heater isn’t working. Water pumps are belt-driven, and belts have a tendency to break and wear. Before I took it there, I had burned out the AC Compressor. If it isn't it could be that the heater control valve is not working and needs to be replaced, or on older cars a physical flap which alters the path of the air could be broken, or disconnected from the controls. step 1 : Verifying the Malfunction Jump to 0:20. This is more common with older cars. Optimize fleet uptime and compliance via mobile vehicle repairs, Partner with us to simplify and scale fleet maintenance, Over 25,000 topics, from beginner tips to technical guides, Check cars for recalls, common issues & maintenance costs, Hand-picked, community-rated professionals, Our mechanics make house calls in over 2,000 cities, Explore nationwide job opportunities for automotive technicians, Trusted mechanics, rated by thousands of happy car owners, Fleet maintenance with certified mobile mechanics, Volkswagen Beetle - Heating AC - Houston, Texas, i am well satisfied with Mr Smith working on my car(s). The system has several different components that work together to provide heat. They send certified and screened mechanics straight to your door and enable you to save big on car repair and maintenance.”, “YourMechanic will come to wherever your car is to perform any of a wide variety of car maintenance and repair services, and will charge you less than you'd normally pay if you were to drop your car off at a garage.”, "YourMechanic will fix your car at your garage at a fixed hourly rate much lower than their brick-and-mortar counterparts.".