How we fixed our Volkswagen with a low coolant issue 

I’m having this issue right now, I’ve been to two shops in the last week and when I googled it they mentioned head gasket issues smh, going to try this now!

Good idea to check or clean the cap sealing surface

Crazy it was the cap. I'm working on my 2011 VW Jetta now. Coolant reservoir looks good, but I might just replace since it's only $23 for a new one. One hose has some discoloration which I will replace as well, but I have to trace it all the way through the other lines and engine. But parked, the coolant leaks directly below the right front passenger tire, so it's somewhere on that side that is causing the level to drop consistently. Just started happening so I'm trying to assess myself before having VW dealership charge me $600.

Hi just had the same problem. Thanks for the Tip.

I had numerous refills and top offs with my 2022 Taos. This might explain why. One VW dealer told me that these cars consume coolant normally. That sounded ridiculous!

I'm having coolant shortage, with my treg and I suspected the cap because there's significant patches of vapour around the cap. I'll get a replacement straight away. Tnx.

Hi i have the following technique did once when changing the coolant of the mk4 2.0 golf; For like 15 minutes, the engine is On and i accelerate hard each 3 seconds with the drain port open emptying the used coolant but at the same time im filling the coolant from upperside ( were we add coolant) with a an average garden (mineral water) hose with normal water flowing, and we check down till all the drained strange color dissapears. After this process, never had a problem using the car on average but i just did it once, you recommend me to do this again?, or should i just limit to change the coolant without this other cleaning method?, thanks in advance!

I think the issue can be very different, dependihrg on the symptoms. Like, does it leak or not. Does it smoke white for example or not. Does it overheat. Etc etc By these issues they can find the issue.

Hi ! I just replaced mine on my Skoda about a month ago and it seems like I lost a couple drops . Is it normal?

I have the opposite problem on my twin charged 1.4 TSI Fabia RS, my coolant level is the same since several months, it should have dropped a bit but no ! What should I do ?

Is there meant to be a gasket on these caps? I have the same issue, but I noticed i dont have an o-ring/gasket on my cap. Is this normal, as i can find on eBay gaskets for the coolant caps? I'm a bit confused?! Thanks for the advice!!

Today my car just blew white from under my hood and there was a big puddle under my car but no overheating or nothing. I checked the reservoir it was empty I put coolant in there but it drained right out underneath the car. Any ideas would be much appreciated!

Hello, i have a Golf Variant 1.9 TDI year 2008 and i am having this issue atm when i turn the car or i get the message STOP and check the antifreeze light comes on..there is no smell, no visible leaks no smoke coming from the car...could really the cap be the problem?

My old 98 Pontiac almost died from no oil due to the oil leaking out of the oil sensor plug. The replacement costed 7 bucks. Car almost died for something that costed 7 bucks lmao.

In my Mk5 R32 I had a coolant leak from the expansion tank so i changed it, but 2 days in and i noticed my coolant disappeared no leaks so im puzzled maybe the cap i didn't change it to a new one with o ring ill try that.

What kind of coolant did you use? and What brand?

I chek coolent level in 2000 to 2500 km and level was low , what is problem ?

Same issue. After short run if 10 miles, "Low Coolant Lever" alert and coolant is found to have gone from full to dangerously low level. Refill, and repeat 10 mile run and same issue returns. Subsequent visible leak inspection shows wetness under coolant bottle and just a few drops on floor beneath area of bottle. Bought a new cap for 10$ but I want to test if original 4 year-old cap is faulty. How to test for faulty cap pressure level? Why? If I cannot prove the original 4yr cap is faulty, there has to be a fault somewhere still lurking ! Vehicle 2018 Arteon 2.0L Petrol.

I just changed my radiator and now my coolant steams out the coolant cap and I could hear it boiling/pressure . What do you think the problem would be with the thermostat or a blown head gasket??. I start the car and within 5 minutes of driving it starts steaming and boiling

Can you confirm that this fixed the issue? Or are you still having issues with the cars? I have a 2017 GLI and about 2 weeks ago it was just above the minimum line and tonight it threw a check coolant warning at me just as I had got home. I have yet to investigate if there is some other issue, I just got the car from a reputable dealer and figured there likely wasn't anything wrong with it, I'm going to follow up with them after I check under the hood and conduct my own investigation.

Thnxs a lot yes sure easy things first;) yes very good man very good yes 1 cap number 2 see leaks on hoses and number 3 lak test,4water pump,4 egr cooler if diesel egine.

Thanks for the video. How much coolant did it drop per 1000kms, my VW 1.4 (same bottle and cap) is spending about 100ml per 1000kms never found out why. Could you visually see your coolant boiling in the expansion bottle when you had this problem? Did you had this situation in two different cars?

The cap can cause to have a pressure on coolant system when the cap does not work doe to age or broke

I have 2021 Jetta mine says “please check coolant level, see manual” I check it its between the min and max line it goes off for two days then comes on again for less than 5 mins before I just restart the car

Is there a radiator cap on these vehicles? I'm trying to fix what I believe to be a radiator leak by using sealant. Directions say pour directly into radiator. But can't find spot.

But does the check engine light come on if it is the radiator cap?

Hi, I've recently notice lower coolant levels on my pd105 anyway have looked around can't see any coolant leaking. I have changed the cap and will see how it goes but the new cap isn't a very tight fit compared to the other one, or doesn't click into place when tight. The new one just stops at the stop. Is yours a tight fit or just stops almost hits a wall feeling? Cheers

Never thought about that im gonna order a new cap right now see if it will fix my car

My coolant level it’s low I think I have the same issue

I’ve changed my cap and bottle still got the issue

I just got this car from somebody and it’s leaking coolant 😭somebody help

Replaced mine still same issue

I have same issue currently car not overheating, 100% service 😢😢😢😢

You probably got ArmorAll on the seal..

I hate cars so much😭, all i hear is money is about to be spent

Do a 'sniff test' on the coolant could be a head gasket

its tru

Worthless

its tru