Topping off Audi VW Coolant Antifreeze

Is your Audi or VW coolant level low? Did the coolant warning light start flashing? We show you how to confirm the coolant level and demonstrate the steps of adding antifreeze to your Audi or VW coolant system. The proper Audi VW G13 and G12 coolant specifications used when filling the coolant reservoir tank are also explained.

VW Audi coolant antifreeze topics discussed in this article:

  • Explanation of low coolant level lights.
  • How to check your coolant level.
  • How to add or top off the coolant reservoir tank.

This video is showing a 2019 Jetta 1.4T. However, this information can also be applied to the majority of VW and Audi models. This is because there are many similarities in the basic design and function of Audi and VW cooling systems.

There are two ways to know if your coolant system is low and that you will need to add coolant to the system.

  1. The first and most obvious indication of a low coolant level is the low coolant warning light that appears on the dash or instrument cluster.
  2. The second way is by doing a visual inspection of the coolant reservoir tank (aka expansion tank) and seeing that the coolant level is low. The coolant reservoir tank is in the engine compartment.

Audi VW Low Coolant Level Warning Light

The first and most obvious indication of a low coolant level is the low coolant warning light that appears on the dash or instrument cluster. See the video for what this light looks and sounds like.

Visual Inspection of Coolant Level

To pop your hood, you can pull on the hood release until you hear the hood release. Next, release the hood latch and in this case support the hood.

Locate the coolant expansion tank. The VW Jetta (shown in the video) coolant reservoir thank is located on the passenger side of the engine compartment. Typically, all your Audi VW coolant reservoir tanks are always a clear tank with either a blue or black colored cap. As well, you can reference the tanks with the coolant logo on the cap which is the same logo as the warning light that was on the dash.

Once you have located the coolant expansion tank you can look at the coolant level on the side of the tank. You are going to look for the minimum and maximum marks on the side. You will need to add coolant if the level is low or below the minimum level mark.

Topping Off the Coolant Level

The first thing you can do is remove the Audi or VW coolant cap in a counterclockwise direction. You always want to do this while the engine is cold and never when the engine is hot.  If the coolant cap is removed while the engine is hot the pressure from the coolant system will end up pushing the coolant out of the tank and you could severally burn yourself. Never remove the cap when the engine is hot.

Next, you can top off the coolant level by filling the expansion tank up to the maximum fill line. As shown in the video, we used RAVENOL G13 VW specification coolant which is made in Germany. This is a great convenient premixed ready-to-use Audi VW G13 coolant option.

When your filling the VW or Audi coolant reservoir tanks, you never want to exceed the max level. This extra space in the tank is for the expansion of the coolant while the engine is running. Once the coolant reservoir tank is filled to the maximum level line you can reinstall the cap (clockwise) until you hear or feel the click.

Next you can close your hood and confirm its latched.

We recommend keeping some coolant in the trunk in case you need to top off the coolant system while away from home or on a road trip. It is also good to have it in the trunk to ensure that you have the correct coolant specification on hand in case you have another low coolant level situation.