The serv light means that there is a problem with the ecu,u will have to take it to a garage to get looked at
After a repair has been made on a Renault Laguna the service light will need to be reset. To do this plug the diagnostic tool into the computer and reset the light.
How do you reset the service light on a 2001 Renault Clio?" and can you take your seat out and take the air bags out and how is it done
How to Reset the Service Interval on a Nissan Navara 2.5 Read more: How to Reset the Service Interval on a Nissan Navara 2.5 | eHow.com http://www.ehow.com/how_7479944_reset-interval-nissan-navara-25.html#ixzz0eMmf6XGz
Both DCi and DXi Renault HGV vehicles the service reset is a manual procedure using the dashboard instruments.
To turn off the service light on a Renault Clio, first ensure that the vehicle is in the "ON" position without starting the engine. Then, press the trip reset button on the dashboard until you see the service interval display. Finally, hold the button for about 10 seconds until the service light resets. If the light remains on, consult the owner's manual for specific model instructions.
You can reset the service light by bringing of the oil life monitor on your display. Hold the scroll button in until the oil life goes to 100 percent. This should reset your service light.
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.
To reset the service interval on an Opel Vivaro, turn on the ignition without starting the engine. Press and hold the trip reset button on the dashboard, then turn the ignition off and back on while still holding the button. Continue holding the button until the service interval light flashes and resets. Release the button, and the service interval should now be reset.
Have vehicle scanned to determine the problem
using the right hand lever from the steering column, use the button to select the service screen on the dashboard screen, then depress and hold the button in on the lever. you will notice the dashboard screen flash through the various screen then after a while your service interval will be reset.
To turn off the service interval light on a BMW motorcycle, first, ensure the ignition is off. Then, press and hold the trip reset button while turning the ignition on without starting the engine. Continue holding the button until the display shows the reset option, then release the button and press it again to confirm the reset. The service light should turn off, indicating that the service interval has been reset.
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.