Sounds to me to be the check engine light. The fact that it is flashing may indicate a serious problem. Have it looked at a.s.a.p. If the light was steady,it may not be to serious.
You need a scan tool.
You get it serviced at an authorized garage, they will have the equipment to read the diagnostic, fix what your car is complaining about and reset the spanner light.
In order to reset the airbag light on a Renault Megane, you will need to take your vehicle into an auto body shop. You cannot reset it yourself.
There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.
i have renult megane cabrolete the car been standing for 10 months not been used the airbag light on why
To reset the service light on a 2001 Renault Megane 1.6 16v, turn the ignition key to the "On" position without starting the engine. Press and hold the trip reset button on the dashboard until the service light blinks and then goes out. Release the button, turn off the ignition, and start the engine to ensure the service light is reset. If the light remains on, repeat the process.
To reset the service light on a 2003 Renault Megane, turn on the ignition without starting the engine. Press and hold the trip reset button on the dashboard until the service light begins to flash, then release the button. After a few seconds, the light should turn off. If it doesn't, repeat the process to ensure the reset was successful.
i had the same probelem with mine and its got to do with the key fob needing replacing can be traced by renault dealers.
It could fit a T10.
The check engine light is flashing due to a problem with the emission system. I flashing check engine light usually indicates a random engine misfire.
To reset the service light on a 2005 Renault Megane Grand Scenic, turn the ignition to the "ON" position without starting the engine. Press the accelerator pedal three times within five seconds. After this, the service light should turn off. If it doesn't, you may need to verify the procedure or consult the owner's manual for further instructions.
If the check engine light is flashing when the engine is running , that indicates that an ignition misfire has been detected