Unsure about the diesel, but does it have the shutters in front of the radiator like the PHEV? Maybe it jammed up temporarily and didn't open.

 

ah ha, that makes sense - yes there are shutters there - thank you!

 

It is common problem with the diesel engine. Probably your engine will be replaced. Check coolant level under the bonnet.

 

kowalcp2 - what is the problem? Are you saying the shutters is not the problem but there is another problem which requires engine replacement?

 

yes, cooling problem which cause overheating. There are many cases on fb groups. Most of the cases have been finished with new engine. Have you checked level of the coolant?

 

oh, thanks for explaining. Coolant is full. Do you know what causes the cooling system to have this issue? Engine change seems like its a design flaw and needs a new cooling design.

 

I had а similar issue - drove quite fast for 40 minutes on the highway and it was after I took the exit and decreased the speed when the engine temperature increased. Some of engine coolant was thrown through the cap of the coolant tank.
Engine had to be replaced under warranty.
I never understood what actually happened, but for me it looks like a failed engine head gasket.
Replacement took something like a month and I was given a CX-5 as a replacement car during that period.
Please keep us updated on how the issue develops in your case.

 

Hi, had exactly the same thing with my 2024 3500km cx-60 diesel a few days ago. The car was towed to the dealer and they said that diagnostics showed that these shutters did not open and there was a possibility of engine overheating. They did not repair or change anything and told me that if this happens again, call Mazda Europe and they will tow the car again. Coolant was overfilling and coolant tank was absolutely full all these two hours I waited for the tow truck and coolant level did not go down. Question - how did you get the dealer to change your engine? Seems like Mazda dealer in Estonia has no clue about this problem and lets me drive off and hope this problem does not happen again.

 

You can buy CO2 coolant tester and check it by yourself.

 

Same issue with my car. It has already happened four times, and I’ve taken it to the dealer four times without them finding any problem… and now my car has been at the dealer again for a week. Hopefully, they’ll fix it soon… Do you have any idea how the other cases were resolved?

 

Yes, your engine has to be replaced. Head gasket.

 

Interesting thread.

Our CX-60 had just been for a service and was about 1.25 hours into a 3.5 hour journey when coolant warning message came up. I pulled off into a motorway service area and popped the hood. Coolant bottle overflowing and coolant dripping off bonnet.

Decision was made to abandon trip and try to limp home. Starting off, all seemed OK but about 15 minutes in, same issue. Heater also packed up. Coolant gauge up and down like a yoyo. Anything over 50 MPH or going uphill, temperature would rise alarmingly. Ease off and it'd fall back into the normal range.

I had thought that coolant may have been drained during service and air introduced into the system. Dealer swears not.

I'll get Mazda to take a look at the car on Monday but if not air in system, looks akin to a blown head gasket. Engine's done something in the region of 25,000 miles.

Not good!?

 

Head gasket for sure. It's common issue. Probably your engine will be replaced.

 

What a pain, with the biggest pain likely to be getting Mazda to own the problem!?

I'll let the forum know how I get on.

 

In Poland they know this problem very well.

 

Hi. Got my CX-60 towed to the dealer for the second time. After a week they said that they did the coolant co2 test and it was positive. Yesterday they said that there is one new engine somewhere in Europe and it takes two weeks for it to arrive here in Estonia and then at least two to three weeks for it to be replaced. They gave me a PHEV cx-60 for the period although they said that it is not required for them to give me a replacement car at all.

 

Apparently issue with car overheating is early indication of head gasket failure. This will be repaired under warranty but parts aren't available. They're on back order -- although for most items, this seems to be end of next week. However cylinder head bolts, 7th April.

No car for me for a while.

Well, until I ask the dealer for a temporary replacement.

TBH, just happy that the issue is being acknowledged and fixed.

 

So they started to repair instead of replacing them...
It's intresting to know the production date after which the engines are not affected...

 

All are affected.

It depends: sometimes engine has to be replaced.

 

All? So this is a design issue? strange.

 

Hi I drive a Mazda 3.3L diesel, 2023 model, currently have 17,000km. I just read all the posts. On two occasions, like most, I had the same problem with overheating at higher speeds and uphill. On the first occasion, they changed the intercooler, but the problem was not solved. After three weeks, on the first trip out of town, it overheated again, coolant was overfilling and leaking out of the tank. I am currently waiting for the final outcome from an authorized Mazda repairer. Do you know if they are required to provide us with a replacement vehicle while the repair is in progress?

 

[CITÁT="Philipb, příspěvek: 10223, člen: 1967"]
Ahoj všichni,

Řídil jsem svůj vůz CX-60 s dieselovým motorem 3,3 l, když se mi zobrazilo toto varování, jak je uvedeno níže:

Nadměrná teplota motoru. Výkon motoru dočasně omezen.

Sled událostí byl následující:

• Jel jsem přes 2 hodiny a všechno bylo v pořádku.
• Zastavil jsem se na toaletu a pak, když jsem pokračoval v cestě, se mi asi do 5 minut objevila výše uvedená chyba.
• Zpomalil jsem a zmizelo to, jakmile se auto zdálo vychladnout, pak se to vrátilo, když jsem zrychlil do kopce.

Ukazatel chladicí kapaliny reagoval velmi rychle, například když jsem snížil rychlost, teplota klesala, a když jsem auto tlačil, docela rychle stoupala. Zapnutí a vypnutí klimatizace nic neměnilo.
Pak se mi zobrazilo další varování, které říkalo něco jako vysoká teplota chladicí kapaliny, tak jsem auto zastavil a vypnul.
Nastartoval jsem auto a stále ukazovalo, že je horké. Ventilátor chladiče běžel a viděl jsem, jak teplota při volnoběhu docela rychle klesla.
Nastoupil jsem zpátky do auta a auto jelo perfektně dalších 250 km - vůbec žádný problém.
Zkoušel jsem auto tlačit a agresivně zrychlovat do kopce atd. - auto bylo perfektní, ukazatel chladicí kapaliny se ani nepohnul.

Nejsem si na 100% jistý, ale zdálo se mi, že se točilo ve vyšších otáčkách, než by mělo, zatímco se přehřívalo. Myslel jsem, že jsem možná narazil do řadicí klapky a zařadil manuál, ale bylo to v D.
Auto je staré 3 měsíce - najeto necelých 5000 km.
Nic jsem netáhl.
Venkovní teplota byla 23 stupňů Celsia.

Pokud máte nějaké nápady View attachment 1603
?
Mohlo by se jednat o cyklus filtru pevných částic (DPF)? Ale nikdy by mě nenapadlo, že by to mohlo spustit varování...
S pozdravem
Filip
[/CITOVAT]
3,3 diesel 254 HP Motor KO
30 000 km 😢

 

Found this forum when I tried to understand my CX-60 Diesel 3.3 'overheating' problem. It's happened about 5-6 times now, "Excessive engine temperature. Engine output restricted temporarily". First time it happened I lifted the bonnet and some coolant had blown out of the expansion tank cap. But I couldn't think why it had suddenly overheated, two hours into a journey. I had been driving normally as I had driven in the previous 29,000 miles. And it didn't repeat for a few more weeks. Then it did it again, climbing a longish hill near home after a one hour journey. Yet again, the temperature returned to normal after about 5 minutes with engine off. Subsequently it has done it again with the same pattern: after at least an hour on the road, normally on a slight uphill section. I made it to our nearest Mazda dealer (nearly four hours away) with just one overheat, and then as long as I kept my eye on the temperature gauge and kept speed to around 60-70mph I could carry on without issue. Having read about head gasket problems I watched for white smoke: none. I checked the oil dipstick, no whiteish residue, I checked the coolant level, once cool, morning and night, no loss. Yet the Mazda dealer did the 'sniffer' test and seems to be of the opinion the problem is the head gasket. Furthermore his demeanor seems to suggest it might not be covered by warranty, and might not even include a loan car if they take it in to repair. I apparently have to continue to drive as I have been doing, and await a decision from Mazda to decide whether to repair or replace under warranty or charge me for repairs and loan/hire car. Frankly, having had 5 faultless Hondas before, I'm rather shocked that a manufacturer of a premium vehicle should leave me feeling anything other than full satisfaction. That I have bought a car that has been less than 100% reliable is bad enough in my book.

 

Why not covered by warranty? Many engines in Europe have been replaced under warranty.

 

I'm not convinced it's the head gasket causing the high temperature. There's no coolant loss, no loss of power, no white smoke, no scum in the oil and I'm baffled by the fact that the radiator blinds don't open when the car has slowed because the temperature is so high that power output is limited. At what engine temperature should the blinds be open, and what could prevent them opening to cool the engine?

 

Mazda have authorised repair (head gasket) and loan car.