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10.0

really awful
Crashes / Fires:
4 / 0
Injuries / Deaths:
4 / 0
Average Mileage:
223 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2020 Toyota Corolla miscellaneous problems

miscellaneous problem

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2020 Toyota Corolla Owner Comments (Page 1 of 3)

problem #49

Jul 042024

Corolla

  • miles

A D V E R T I S E M E N T S

coolant bypass valve issue

- Lancaster, PA, USA

problem #48

Jun 252024

Corolla

  • miles
Engine Maintenance Required, See the dealer msg started popping up. Went to the dealer and after diagnostic check, the dealer said the bypass valve need to be replaced and wont be covered under powertrain warranty.

- Wylie, TX, USA

problem #47

Jun 172024

Corolla

  • miles
The coolant bypass valve is failing. Engine Maintenance Required message popped on car display. Toyota is trying to charge over $600 to fix it. Many have reported same issue

- Austin, TX, USA

problem #46

Jun 102024

Corolla

  • miles

A D V E R T I S E M E N T S

coolent valve

- North Miami, FL, USA

problem #45

May 302024

Corolla

  • miles
I have a message that says engine maintenance required. I ran a diagnostic and it is for the engine coolant bypass valve.

- Bonney Lake, WA, USA

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problem #44

May 192024

Corolla

  • miles
At 55K miles for my 2020 Toyota Corolla, the Engine Maintenance Required notification popped up on my screen and is not removable. Upon further verification numerous 2020-2021 corollas have been having this issue at similar amounts of mileage. It is a faulty Engine Coolant Bypass Valve that needs to be replaced. If I were to take it in to a dealership, they would charge $500+ just as they have for many others when it should really be a recall. As of now I have not taken it to be inspected due to fear of steep labor costs. My safety is at risk because if this does not get replaced my engine will overheat causing total failure of the car, and as a 2020 model with such low mileage, this is ridiculous.

- Glendale , AZ, USA

problem #43

May 012024

Corolla

  • miles

A D V E R T I S E M E N T S

Coolant bypass valve failed at 52k miles.

- Sebring, FL, USA

problem #42

Apr 152024

Corolla

  • miles
My son and daughter in law moved from California to Georgia due to military duties in Hinesville Georgia. They drove their 2020 Toyota Corolla from California to Georgia. They paid the fee to obtain their 2024 registration sticker but got denied by the DMV in California due to a recall on this vehicle. My son took the vehicle to Chatham Parkway Toyota in Savannah Georgia to fix the recall. He received documentation that the recall has been fixed. My daughter in law took this documentation to the DMV and they said it was not sufficient, we needed to provide the original pink copy of the recall. Chatman Parkway Toyota never gave my son the original copy. Where can we obtain this so we can receive our registration sticker? Can you please help us out and contact Chatham Parkway Toyota to see if they even fixed the recall problem or not and why they did not give my son an original copy of the fixed recall situation. It has been a struggle to obtain the registration sticker when the recall was a problem. This situation has been very stressful due to an expired registration and not being able to drive u til we receive the correct sticker. Please help if you can. Thank you, [XXX]. [XXX]. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- San Bruno, CA, USA

problem #41

May 032024

Corolla

  • miles
Check engine light is giving a false positive. There is something wrong with the coolant bypass valve. I checked online and this is not an isolated event.

- Coral Springs, FL, USA

problem #40

Mar 102024

Corolla

  • miles
I own 2020 corolla le. It has 50k miles. There is a message that keeps coming up in the infotainment screen and hinders the navigation information especially when i am looking for directions and evey second counts and not being able to act when the exit appearscan cause an accident. The message is caused by a dcm failure. Toyota should never allow a message like that pop up every time on the navigation screen. It keeps saying -?? device connected not supported -?? every few seconds.

- Kissimmee, FL, USA

problem #39

Apr 152024

Corolla

  • miles

A D V E R T I S E M E N T S

Maintenance required please see dealer message pops up and cannot be dismissed. Coolant sensor bypass valve is damaged.

- Kapolei, HI, USA

problem #38

Apr 122024

Corolla

  • miles
The "Engine Maintenance Required, Visit Your Dealership" is displayed. The oil has been changed and tried to reset the warning as it states in the owners manual but it wont reset.

- Conroe, TX, USA

problem #37

May 192023

Corolla

  • miles
Engine maintenance required People on internet saying that i need to change the coolant bypass valve

- Bronx, NY, USA

problem #36

Feb 192024

Corolla

  • miles
-??Engine Maintenance Required Visit Dealer-?? keeps popping up despite engine being fine. Another scan by my mechanic determined that the cooling bypass valve is having an issue/keeps getting stuck and triggering the maintenance alert to keep going off.

- Artesia, CA, USA

problem #35

Mar 052024

Corolla

  • miles
toyota 2020 COOLANT BYPASS VALVE Circuit Short.

- Miami, FL, USA

problem #34

Feb 282024

Corolla

  • miles
Coolent bypass valve

- Fresno, CA, USA

problem #33

Jan 312024

Corolla

  • miles
Coolant bypass valve bad cost $550+ to fix car is 4 years old

- Simi Valley, CA, USA

problem #32

Jan 072024

Corolla

  • miles
There is a thing that-??s happening to a lot of Corollas and I think RAV4 and some cram it-??s called engine maintenance required and a lot of mechanics don-??t know what that means so you have to take it to the dealership to get it fixed and it-??s like a $900 fix and it-??s been happening to a lot of vehicles around 35,000 miles. It-??s called the coolant bypass valve. There is hundreds of YouTube videos about it and people complaining about it on forums.

- Fontana, CA, USA

problem #31

Sep 062023

Corolla

  • miles
Around 40k miles I received an Engine Maintenance Required warning. After some research Engine Maintenance and Engine Service Required are two very different indicators. I received and P2681 code meaning the electrical coolant bypass valve had failed unfortunately one can-??t tell if it-??s stuck shut or open this could lead to one-??s care over heating and or damaging one-??s engine. After some research I-??ve come to find out most 2020-2024 corollas have been having this issue tends to happen about 30-50k miles

- Perris, CA, USA

problem #30

Dec 312023

Corolla

  • miles
Precollision System Malfunctioning and Hybrid System Malfunctioning warning signs on dashboard won-??t allow the car to move or driven at all. I read reviews where people with the same warning signs on dashboard got their car stalled in the middle of the road. My vehicle only has 81,000 miles on it and Toyota dealership warranty states it-??ll cover the vehicle up to 150,000 miles EV hybrid but now they are stating the car is not under warranty

- Los Angeles, CA, USA

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