The heater on your Jeep is a wonderful creature comfort that, as modern drivers, we can’t do without in the wintertime. When it stops working, it can be a frigidly frustrating issue. However, you don’t have to suffer in the cold as heater issues can sometimes be easy to fix. Here are the steps you need to follow to pin down your Jeep heater issues.
Begin the diagnosis by inspecting the system for obvious signs of damage. Look for broken parts, split hoses, and leaks. Obstructions and leaks are common issues that cause low heat delivery to the cabin of your Jeep. Repair or replace any broken or damaged parts.
Do a simple coolant level check of your reservoir and radiator when your Jeep is completely cooled. If the levels are low, add coolant to the system and try the heater once the vehicle is back up to operating temperature.
Take a look at the blower motor and circuit to ensure that they are functioning properly. Check the fuses, wires, wire connections, and switches. To check the resistor, you’ll need to use an ohmmeter to make sure it’s giving off current.
Locate the black hoses that connect to your heater core at the firewall. Hold your hand over them and feel for heat. If the engine is warm, you should feel heat. If you don’t, this means coolant is not circulating properly and the heater core is likely in need of replacement.
Make sure your Jeep’s cooling system is working. Heater issues are not commonly the first indicator of a bad cooling system component, but if the thermostat or water pump is bad, the heater will usually not work properly either. If your Jeep is overheating and the heater isn’t working, the components of the cooling system are the likely suspects.
If you are unable to identify the culprit for Jeep heater issues at home, always take your vehicle to a Jeep certified mechanic for further help with diagnosis. Also, when you do replace parts in the HVAC system, always use real Jeep parts to prevent premature failure or wear on other parts from poor quality aftermarket components.