# Ford Mustang coolant temperature warning light: complaints, recalls and what to do **Verdict:** Stop driving - **Owner complaints:** 64 - **Most complaints:** 2016 (19) - **Related recalls:** 5 - **Verdict:** Stop now ## Quick answer NHTSA has 64 owner complaints about the coolant temperature warning light on the Ford Mustang (2015-2026 models), most for the **2016** model year (19). There are **5 recalls** for related parts; check yours by VIN. Stop driving: No. ## Ford Mustang coolant temperature warning light complaints by model year | Model year | Complaints mentioning the coolant temperature light | All complaints that year | Share | | --- | --- | --- | --- | | 2015 | 4 | 439 | 1% | | 2016 | 19 | 380 | 5% | | 2017 | 4 | 269 | 1% | | 2018 | 16 | 197 | 8% | | 2019 | 15 | 152 | 10% | | 2020 | 5 | 122 | 4% | | 2021 | 1 | 55 | 2% | 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. ## Ford Mustang recalls related to the coolant temperature warning light **[26V548000](https://www.nhtsa.gov/recalls?nhtsaId=26V548000)** (2026 models, reported 2026-08-25): An unexpected loss of drive power increases the risk of a crash. **Remedy:** Dealers will inspect the engine pistons and replace the engine long block, if necessary, free of charge. Interim letters, notifying owners of the safety risk, were mailed September 3, 2026. Additional letters will be sent once the remedy is available, anticipated in December 2026. **[26V205000](https://www.nhtsa.gov/recalls?nhtsaId=26V205000)** (2026 models, reported 2026-03-31): An unexpected loss of drive power increases the risk of a crash. **Remedy:** Dealers will inspect the engine for missing or mis-installed circlips and replace the engine as necessary, free of charge. Owner notification letters were mailed April 10, 2026. **[26V122000](https://www.nhtsa.gov/recalls?nhtsaId=26V122000)** (2025 models, reported 2026-03-04): An unexpected loss of drive power increases the risk of a crash. **Remedy:** Dealers will replace the EGR valves, free of charge. Owner notification letters were mailed July 31, 2026. **[18E035000](https://www.nhtsa.gov/recalls?nhtsaId=18E035000)** (2018 models, reported 2018-05-24): A fuel leak can increase the risk of a fire. **Remedy:** Roush will notify the known owners and replace the defective fuel rail subassemblies, free of charge. The recall began on May 31, 2018. **[16V779000](https://www.nhtsa.gov/recalls?nhtsaId=16V779000)** (2015-2017 models, reported 2016-10-26): A sudden loss of engine oil may cause engine failure, increasing the risk of a crash. Additionally, an oil leak, in the presence of an ignition source, increases the risk of a fire. **Remedy:** Ford will notify owners, and dealers will replace the engine oil cooler tube assembly, free of charge. The recall began on March 23, 2017. Recall repairs are free at any Ford dealer. Enter your 17-character VIN at [nhtsa.gov/recalls](https://www.nhtsa.gov/recalls) to see whether yours is still open. ## What Ford Mustang owners report - "A steady Check Engine Light came on after starting the car; brought it to Ford Dealer of Montebello and they stated coolant leak and got into one of the cylinders that caused misfires." -- owner of a 2021 Ford Mustang, complaint filed 2026 - "The contact stated that the engine overheated while driving. The contact was able to pull over and the vehicle was towed to the local dealer to be diagnosed. The contact was informed that there was coolant in the combustion chamber, engine block, and cylinder head, and the low-pressure fuel pump had failed. The..." -- owner of a 2020 Ford Mustang, complaint filed 2024 - "There is a coolant leak and that has caused significant damage to the engine due to a bad head gasket by poor manufacturing of the engine." -- owner of a 2019 Ford Mustang, complaint filed 2025 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 Ford Mustang coolant temperature light? Yes. NHTSA lists 5 related recalls (26V548000, 26V205000, 26V122000, 18E035000, 16V779000) covering 2015-2026 models. Recall repairs are free; check your VIN at nhtsa.gov/recalls to see if yours is open. ### Which Ford Mustang years have the most coolant temperature light complaints? In NHTSA's database the 2016, 2018 and 2019 Mustang model years have the most complaints mentioning the coolant temperature warning light, with 19 for 2016. Complaint counts reflect how many cars were sold as well as how often problems happen. ### Is it safe to drive a Ford Mustang 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 Ford Mustang has an open recall? Enter the 17-character VIN from your dashboard or registration at nhtsa.gov/recalls, or ask any Ford 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 Ford Mustang warning lights - [Airbag (SRS) warning light](https://diagxcar.com/warning-lights/airbag/ford-mustang): 20 complaints - [Brake warning light](https://diagxcar.com/warning-lights/brake/ford-mustang): 36 complaints - [Check engine light](https://diagxcar.com/warning-lights/check-engine/ford-mustang): 134 complaints - [Power steering warning light](https://diagxcar.com/warning-lights/power-steering/ford-mustang): 27 complaints - [Traction control light](https://diagxcar.com/warning-lights/traction-control/ford-mustang): 23 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 ## Ford Mustang - [Ford Mustang specs and mpg by year](https://diagxcar.com/vehicles/ford-mustang) --- Source page: https://diagxcar.com/warning-lights/coolant-temperature/ford-mustang Updated: 2026-11-04 General information, not a substitute for a qualified mechanic.