Low level coolant light still flashing after filling up tank

Sensor in the fill tank is probably bad .
LOW COOLANT
The IPC illuminates the LOW COOLANT indicator in the message center when the IPC detects a low coolant level condition from the PCM. The IPC receives a class 2 message from the PCM indicating the coolant level.
Coolant Level Control (If Equipped)
The engine cooling system contains an engine coolant level switch to alert the driver in the event of a coolant loss. The powertrain control module (PCM) sends out a coolant loss signal over the coolant level switch signal circuit. When the engine coolant level switch reads a low coolant level in the fill tank, the switch opens. The message center receives its power from engine wiring harness junction block on the battery positive voltage circuit. Ground is provided by the ground circuits via the body wiring harness junction block and the engine wiring harness junction block. The cluster receives the class 2 message from the PCM indicating Low Coolant and displays the LOW COOLANT LEVEL message on the driver information center (DIC).

Is the fill tank full ?

Is it full of coolant if yes level sensor bad if not fill rad and overflow bottle to proper level and retest

The low coolant light is operated by a level sensor located in the coolant reservoir itself. If the low coolant light is on and the coolant level is full then wither the sensor is unplugged or the sensor is bad.

most cars and trucks have a censor on radiator or fill tank,ck the coolant level and if it is full then censor should turn lights off if it is low fill with water to full line and light should turn off

I WOULD CHECK BOTH RADIATOR HOSES TO MAKE SURE THEY ARE HOT. THERMOSTAT COULD BE STICKING SLIGHTLY CLOSED.CHECK COOLANT LEVEL MAKE SURE COOLANT NOT LOW.IF COOLING NOT BOILING OUT OF THE EXPANSION TANK. I WOULD HAVE CAR HOOKED UP TO A DIAGNOTIC SCANNER AND CHECK COOLANT TEMPERATURE SEE IF TEMP. OVER 230 DEGREES IF SO RADIATOR COOLING FANS NOT WORKING.COOLANT THERMO SWITCH BAD BOTH FANS SHOULD BE RUNNING AT LOW SPEED.IF ALL LOOKS GOOD YOU COULD HAVE FAULTY LOW COOLANT SENSOR IN EXPANSION TANK.MAKE SURE COOLANT IS IN THE EXPANSION TANK BECAUSE COOLANT LEVEL COULD BE LOW.ADD COOLANT IN THE EXPANSION TANK UNTIL YOU AT MAX LEVEL LINE ON THE EXPANSION TANK.DONT OVER FILL THE EXPANSION KEEP ADDING COOLANT UNTIL COOLANT LEVEL STAYS AT THE MAX LEVEL LINE ON THE EXPANSION TANK.

check coolant if low add to full line now is light out if not then first pressure check cooling system to find out where the missing coolant went then clean coolant tank out good re-fill is light still on then replace coolant level sensor

I read in the manual that sometimes you need to add or check the radiator as well as the coolant level, I had filled just the reservoir and that did not fix the low coolant light. However I did read that when filling the radiator there is a screw on top of the thermostat housing to bleed the coolant.... you are supposed to start the engine to get the air out of the line as you fill the radiator. Of course only do this when engine is cold. I still have to do this but I cannot get the radiator cap off as I have arthritis and it is very difficult. I hope this helps. Check the manual also.

Hi:
That warning light comes on when the level of coolant in the plastic reservoir tank becomes low. It is possible that the tank just needs topped off after the work on your car was performed. Basically, check the coolant and fill as needed, then keep an eye on your level to make sure there are no leaks on your vehicle since it was worked on.

i think the senser is stuck. i would give that bottle a little smack.like the fonz

Replace the coolant level sensor.