# Mazda 3 coolant temperature warning light: complaints, recalls and what to do **Verdict:** Stop driving - **Owner complaints:** 6 - **Most complaints:** 2019 (3) - **Related recalls:** 1 - **Verdict:** Stop now ## Quick answer NHTSA has 6 owner complaints about the coolant temperature warning light on the Mazda 3 (2015-2026 models), most for the **2019** model year (3). There is **1 recall** for related parts; check yours by VIN. Stop driving: No. ## Mazda 3 coolant temperature warning light complaints by model year | Model year | Complaints mentioning the coolant temperature light | All complaints that year | Share | | --- | --- | --- | --- | | 2018 | 1 | 110 | 1% | | 2019 | 3 | 74 | 4% | | 2021 | 2 | 54 | 4% | Counts are complaints filed with NHTSA whose description mentions this light. They show where owners have had trouble, not a failure rate: popular years collect more complaints simply because more cars are on the road. ## Mazda 3 recalls related to the coolant temperature warning light **[17V745000](https://www.nhtsa.gov/recalls?nhtsaId=17V745000)** (2018 models, reported 2017-11-21): An engine stall can increase the risk of a crash. **Remedy:** Mazda will notify owners, and dealers will inspect the engines and replace any incorrect exhaust valve springs, free of charge. The recall is expected to begin January 20, 2018. Recall repairs are free at any Mazda dealer. Enter your 17-character VIN at [nhtsa.gov/recalls](https://www.nhtsa.gov/recalls) to see whether yours is still open. ## What Mazda 3 owners report - "There were no prior warnings until the engine malfunction notice appeared, the vehicle began to make jolts and stuttering sounds, and the temperature gauge within the vehicle failed to rise to optimal range. As this occurred while the vehicle was in use (safety concern), though I was pushing the gas there would be..." -- owner of a 2021 Mazda 3, complaint filed 2025 - "Even after driving the car and having 30+ minute drives where the temperature gauge never makes it past the first tick (blue), I haven't had the check engine light come on. It's unclear what circumstances are required for DTC P0126:00 to occur, but I've never had a car essentially not get warm during an entire 30+..." -- owner of a 2019 Mazda 3, complaint filed 2024 - "You can see on the display where it has been overheated and is discolored. This is the same location that the "ghost touches" occur. It is intermittent, but occurs more frequently as the unit heats up or after the car warms in an parking lot." -- owner of a 2018 Mazda 3, complaint filed 2024 Excerpts from complaints filed with NHTSA, lightly cleaned for reading. They are owners' own accounts and have not been verified. ## What the coolant temperature warning light means A red coolant temperature light means the engine is overheating or about to. The most common cause is low coolant from a leak, followed by a stuck thermostat, a failed radiator fan, and a worn water pump. Pull over and shut the engine off as soon as it is safe, because continued driving can warp the cylinder head and destroy the engine. The most common causes, on any make: 1. **Low coolant from a leak** (most common) 2. **Thermostat stuck closed** (common) 3. **Radiator fan not working** (common) 4. **Failing water pump or broken belt** (less common) Full causes, what to do and how to reset it: [Coolant temperature warning light](/warning-lights/coolant-temperature). ## Frequently asked questions ### Is there a recall for the Mazda 3 coolant temperature light? Yes. NHTSA lists 1 related recall (17V745000) covering 2018 models. Recall repairs are free; check your VIN at nhtsa.gov/recalls to see if yours is open. ### Which Mazda 3 years have the most coolant temperature light complaints? In NHTSA's database the 2018, 2019 and 2021 3 model years have the most complaints mentioning the coolant temperature warning light, with 3 for 2019. Complaint counts reflect how many cars were sold as well as how often problems happen. ### Is it safe to drive a Mazda 3 with the coolant temperature light on? Stop driving. No. Stop driving as soon as it is safe and shut the engine off. Driving an overheating engine even a few miles can cause damage that costs thousands of dollars to repair. ### How do I check if my Mazda 3 has an open recall? Enter the 17-character VIN from your dashboard or registration at nhtsa.gov/recalls, or ask any Mazda dealer. Open recalls are fixed free of charge, even if you are not the first owner. ## Sources - [NHTSA: Vehicle safety complaints and recalls (api.nhtsa.gov)](https://www.nhtsa.gov/nhtsa-datasets-and-apis) - [NHTSA: Check for recalls by VIN](https://www.nhtsa.gov/recalls) ## Other Mazda 3 warning lights - [Airbag (SRS) warning light](https://diagxcar.com/warning-lights/airbag/mazda-3): 13 complaints - [Brake warning light](https://diagxcar.com/warning-lights/brake/mazda-3): 22 complaints - [Check engine light](https://diagxcar.com/warning-lights/check-engine/mazda-3): 26 complaints - [Oil pressure warning light](https://diagxcar.com/warning-lights/oil-pressure/mazda-3): 10 complaints ## Coolant temperature warning light on other models - [Ford Escape](https://diagxcar.com/warning-lights/coolant-temperature/ford-escape): 1520 complaints - [Ford Edge](https://diagxcar.com/warning-lights/coolant-temperature/ford-edge): 752 complaints - [Ford Explorer](https://diagxcar.com/warning-lights/coolant-temperature/ford-explorer): 222 complaints - [Honda Accord](https://diagxcar.com/warning-lights/coolant-temperature/honda-accord): 193 complaints - [Jeep Wrangler](https://diagxcar.com/warning-lights/coolant-temperature/jeep-wrangler): 143 complaints - [Nissan Rogue](https://diagxcar.com/warning-lights/coolant-temperature/nissan-rogue): 140 complaints - [Chrysler Pacifica](https://diagxcar.com/warning-lights/coolant-temperature/chrysler-pacifica): 139 complaints - [Kia Sorento](https://diagxcar.com/warning-lights/coolant-temperature/kia-sorento): 138 complaints - [Jeep Compass](https://diagxcar.com/warning-lights/coolant-temperature/jeep-compass): 112 complaints - [Kia Soul](https://diagxcar.com/warning-lights/coolant-temperature/kia-soul): 110 complaints ## Mazda 3 - [Mazda 3 specs and mpg by year](https://diagxcar.com/vehicles/mazda-3) --- Source page: https://diagxcar.com/warning-lights/coolant-temperature/mazda-3 Updated: 2026-11-04 General information, not a substitute for a qualified mechanic.