NHTSA Complaint #11610736 — 2020 TOYOTA COROLLA

ENGINE issue reported to NHTSA

Check any vehicle history by VIN - Free vehicle history report

Complaint Details

ODI Number	11610736
Vehicle	2020 TOYOTA COROLLA
Component	ENGINE
Date of Incident	July 31, 2024
Date Filed	August 25, 2024
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	CA

Consumer Description

coolant bypass valve is defective and failed prematurely. coolant bypass valve cracks and leaks coolant. Once coolant beings leaking, it comes into contact with the electrical connector located near the valve. The coolant corrodes and damages the connector, which eventually causes connector to malfunction. This causes the coolant bypass valve to be stuck in the “open” or “closed” position (i.e. it no longer responds to the needs of the engine), restricting coolant flow and allowing the engine to overheat. I had to repair the vehicle at Harvey's Autotech 521 West Sixth Street Corona, CA 92882 (951) 737-9878 at the cost of $643.91and loss of a work day.

Related Complaints for the 2020 TOYOTA COROLLA

Other ENGINE Complaints

#11707273 — December 27, 2025 — Engine coolant bypass valve

#11683483 — August 27, 2025 — I have experienced a message saying 'Engine Maintenance Required' and after experiencing the same instances as many p...

#11679742 — August 11, 2025 — Engine Maintenace required light came on. I was told that my coolant bypass valve needed to be replaced. This is happ...

#11673798 — July 15, 2025 — Coolant Bypass Valve

#11668609 — June 23, 2025 — On June 19, 2025, I was driving and out of nowhere, there was a warning notification that said "A warning light was t...

Recent Complaints for the 2020 TOYOTA COROLLA

#11714511 — ELECTRICAL SYSTEM — January 30, 2026 — when I use blinker windshield wipers turn on and sometimes when I call or somebody calls my cell phone I can hear the...

#11714511 — UNKNOWN OR OTHER — January 30, 2026 — when I use blinker windshield wipers turn on and sometimes when I call or somebody calls my cell phone I can hear the...

#11714511 — VISIBILITY/WIPER — January 30, 2026 — when I use blinker windshield wipers turn on and sometimes when I call or somebody calls my cell phone I can hear the...

#11711699 — VISIBILITY/WIPER — January 18, 2026 — The windshield wiper switch assembly (column stalk/switch) malfunctions intermittently, sending unintended signals th...

#11711360 — UNKNOWN OR OTHER — January 16, 2026 — On the morning of January 7, 2026, while I was on my way to work, I experienced a dangerous incident involving my veh...