How to Refill Engine Coolant / Antifreeze in a VW Tiguan (2018 - 2024, 2023 shown), by Mountain Man Mo on YouTube. 1 min 11 s.
- Video length
- 1 min 11 s
- Time to do it
- 10 minutes
- Difficulty
- Easy
- Steps
- 9
What you need
Steps
Park on level ground and let the engine cool completely, at least 30 minutes, so the coolant is not hot or under pressure.
Open the bonnet and find the coolant reservoir, a see-through plastic tank with min and max marks, usually near the front of the engine bay.
Check the level against the marks with the engine cold. If the liquid sits at or below the min line, it needs topping up.
Use a ready-mixed coolant or stir concentrate and water 50/50 in a clean jug, making sure the mix meets the VW spec for your Tiguan.
Twist the reservoir cap off slowly to let any pressure escape, then put it somewhere clean so no grit gets inside.
Drop the funnel into the neck and pour the mix in until the level reaches the max line. Stop there and do not overfill.
Refit the cap and tighten it fully so it seals.
Start the engine, let it idle a few minutes with the heater set to hot, then switch off and recheck the level once it has cooled.
Look under the car for drips and check the level again over the next few days to see whether it holds.
Tips and common mistakes
Never open the radiator cap or the reservoir cap while the engine is hot, because hot coolant and steam can burn you badly.
Do not mix different coolant types or colours, since that can clog the system and cut protection.
Keep the level between the min and max marks rather than filling to the very top, as coolant expands when hot.
If the level keeps dropping after topping up, have a mechanic pressure test the system for leaks.
Questions
Can I just top up with water?
Only in an emergency and only a small amount. Plain water dilutes the mix and lowers its freeze and boil protection, so get it back to a proper 50/50 mix soon after.
Which coolant does a VW Tiguan need?
One that meets the VW specification listed in your owner's manual, often shown on or near the reservoir cap. Buy a ready-mixed version to avoid getting the ratio wrong.
Why does my coolant keep going down?
Small drops over months are normal. A steady fall points to a leak in a hose, the radiator or the water pump, so get it checked before the engine overheats.
This guide was drafted from the video's details and general task knowledge. It has not been checked against the full video. Check the video and relevant product instructions before following a procedure. Report a correction.
