![]() ![]() I'd check the manuals for how much of a PITA it is to do the thermostat and how much a sensor costs. and im sure my coolant level is fine and not getting lower. Even if the level has only dropped a little, it could still trigger the sensor, depending on the vehicle. and after some driving, even if the engine is then shut off for quite a few hours, when i start it again, the light wont come on. It’s likely that your coolant level is low. Turn Off the Engine Once safely parked, turn off the engine to prevent further overheating. light comes on in the morning when cold, but short after the engine started, it comes off. Coolant Temperature Warning Light: Meaning, Causes, What to Do - In The Garage with Is your coolant temperature warning light illuminated Here's what it means, common causes, and what can happen if you ignore the issue. Temp reading randomly dropping like a rock/spiking to the moon? Sensor.ĭrops to cold when coasting down from freeway speeds? Tstat stuck open. If the coolant warning light comes on while you’re driving, it’s advisable to take the following steps: Pull Over Safely If it’s safe to do so, pull over to the side of the road as soon as possible. ![]() And I don't know which side Tstat is on for this engine (feed or return) so may have to swap those readings.ĭon't know if you can reasonable get hands on the hoses here - so here are alternates assuming you can get a reading and not hot/fine/cold. Cup of the hottest water out of your sink is warm. The coolant temperature warning light turns on when your engine is sensed to be too hot and is at risk of damage from overheating. Tstat stuck open.Ĭold warm hot is a matter of feel and experience unfortunately. Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST. Warm n warm for what seems like forever? Engine warming up. The coolant level should be between the minimum and maximum marks. Check the coolant level in the reservoir. In most cars, the reservoir is situated behind the engine bay and is easily recognized by the coolant symbol on the cap. Or stuck open.Ĭold n cold? You haven't warmed the engine up enough. Open the hood and locate the coolant reservoir. Hot as balls engine feed, cold leaving? Stuck closed. Find hose leaving engine and hose feeding engine from radiator. The Mercedes-Benz Check Coolant Level warning light is an indicator on the vehicle’s dashboard that appears when the coolant level in the engine is low. See what signal is temperature 'good' (assuming it's a Toyota sensor and documented). checking/ruling out air and steam in lines. Also, on newer vehicles, the coolant temperature sensor operates the A/C and the cooling fan. This will tell you the switch is still working somehow. If you dont have the cold and hot values for your switch, you still may want to test the switch and compare the difference in values. If you haven't been babying your cars until they reach operating temp thus far, there's zero reason to start with this car just because it has a light instead of a full gauge (obviously full throttle from a stop maybe isn't the best practice until things get warmed up, but that seems like common sense).Īnd obviously, if the other indicator light comes on (a red one I think) then you're running hot for some reason, then may be a good time to head to the shop.Coolant level, bleed system. Compare values to the ones on your manual. But as long as it turns off after a few minutes (or several if its REALLY cold out) then all is fine. The light goes off after a couple of minutes (obvious this will vary in time depending on how warm it is outside). ![]() even the 10th gens which have a normal temp gauge start with zero bars on start up. An engine, at normal operating temp is way hotter than the ambient air temp, so even on a hot summer day, the engine isn't going to start up warm enough to already be normal operating temp. ![]() This indicator light is completely normal. Some of ya'll never drove a 9th gen and it shows, lol. ![]()
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