Volkswagen Tiguan Heater Not Working

As a Volkswagen technician, I’ve seen my fair share of Volkswagen Tiguans with non-functional heaters. I know how frustrating and inconvenient it can be to be stuck in a cold car on a winter day. That’s why I’ve put together this troubleshooting guide.

This guide will help you quickly diagnose and resolve the issue so that you can get back to enjoying your Tiguan in comfort.

I’ll start by explaining the purpose of the heater and how it works. Then, I’ll walk you through the steps to troubleshoot the problem. I’ll also provide some tips on how to prevent the issue from happening again.

By the end of this guide, you’ll have the knowledge and tools you need to get your Tiguan’s heater working again.

Disclaimer

This guide is intended for informational purposes only. It is not a substitute for professional advice. If you are not comfortable working on your vehicle, please take it to a qualified technician.

Why Volkswagen Tiguan Heater Not Working

Bad Thermostat

The thermostat is a valve that controls the flow of coolant through the engine. If the thermostat is stuck open, coolant will flow through the radiator too quickly and the engine will not warm up properly. If the thermostat is stuck closed, coolant will not flow through the radiator at all and the engine will overheat.

Faulty Radiator Fan

The radiator fan helps to cool the engine by blowing air over the radiator. If the radiator fan is not working properly, the engine will not be able to cool down properly and will overheat.

Low Coolant Level

If the coolant level is too low, the engine will not be able to cool down properly and will overheat.

Clogged Radiator

If the radiator is clogged with debris, it will not be able to cool the engine properly and will overheat.

Leaking Coolant Hoses

If the coolant hoses are leaking, coolant will leak out of the system and the engine will not be able to cool down properly.

Faulty Water Pump

The water pump circulates coolant through the engine. If the water pump is not working properly, coolant will not be able to circulate through the engine and the engine will overheat.

How to Troubleshoot: Volkswagen Tiguan Heater Not Working

Symptoms of a Volkswagen Tiguan Heater Not Working

There are a few different symptoms that you may experience if your Volkswagen Tiguan heater is not working properly. These include:

No heat coming out of the vents. This is the most obvious symptom, and it means that the heater is not able to produce any heat.
Weak or intermittent heat. If the heater is only producing weak or intermittent heat, it may be a sign that there is a problem with the heater core or the blower motor.
A whistling or hissing noise coming from the heater vents. This noise is often caused by a problem with the heater core.
A burning smell coming from the heater vents. This smell is usually caused by a problem with the blower motor or the heater core.

Causes of a Volkswagen Tiguan Heater Not Working

There are a number of different things that can cause a Volkswagen Tiguan heater to stop working. These include:

A faulty thermostat. The thermostat is responsible for regulating the temperature of the coolant in the engine. If the thermostat is stuck open, the coolant will not circulate through the heater core, and the heater will not be able to produce heat.
A clogged heater core. The heater core is a small radiator that is located in the passenger compartment. It is responsible for transferring heat from the coolant to the air that flows through the vents. If the heater core becomes clogged, it will not be able to transfer heat effectively, and the heater will not be able to produce heat.
A faulty blower motor. The blower motor is responsible for blowing air through the heater core. If the blower motor is not working properly, it will not be able to circulate air through the heater core, and the heater will not be able to produce heat.
A blown fuse. The heater may not be working because a fuse has blown. To check the fuses, you will need to consult your vehicle’s owner’s manual.

How to Troubleshoot a Volkswagen Tiguan Heater Not Working

If your Volkswagen Tiguan heater is not working, you can troubleshoot the problem yourself by following these steps:

1. Check the thermostat. The first thing you should do is check the thermostat. To do this, you will need to remove the thermostat housing and check the thermostat’s temperature rating. If the thermostat is not the correct temperature rating, it will need to be replaced.
2. Check the heater core. If the thermostat is the correct temperature rating, the next thing you should check is the heater core. To do this, you will need to remove the heater core and inspect it for any damage. If the heater core is damaged, it will need to be replaced.
3. Check the blower motor. If the thermostat and heater core are both in good condition, the next thing you should check is the blower motor. To do this, you will need to remove the blower motor and inspect it for any damage. If the blower motor is not working properly, it will need to be replaced.
4. Check the fuses. If the thermostat, heater core, and blower motor are all in good condition, the next thing you should check is the fuses. To check the fuses, you will need to consult your vehicle’s owner’s manual.

How to Fix a Volkswagen Tiguan Heater Not Working

Once you have diagnosed the problem with your Volkswagen Tiguan heater, you can fix it by following these steps:

1. Replace the thermostat. If the thermostat is faulty, it will need to be replaced. You can purchase a new thermostat from your local auto parts store.
2. Replace the heater core. If the heater core is damaged, it will need to be replaced. You can purchase a new heater core from your local auto parts store.
3. Replace the blower motor. If the blower motor is not working properly, it will need to be replaced. You can purchase a new blower motor from your local auto parts store.
4. Replace the fuse. If the fuse is blown, it will need to be replaced. You can purchase a new fuse from your local auto parts store.

Conclusion

If your Volkswagen Tiguan heater is not working, you can troubleshoot the problem and fix it yourself by following the steps in this article. However, if you are not comfortable working on your vehicle, you can always take it to a qualified mechanic for repairs.

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