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The service light indicator on a 2004 Chevy Cavalier tells its owners when to send the vehicle in for maintenance. To reset the light, unplug the battery for five seconds.
Have vehicle scanned to determine the problem
The Service Vehicle or Maintenance Required light is there to remind you to do scheduled service on time. When the light comes on look in your owner's manual to see what service is due. Normally this means change the oil/filter. This is not the same as the Check Engine light which means there is a problem with the emission's system.
The ABS light on a 2004 Pontiac Grand Am can be reset by connecting an OBDII code reader to the vehicle's computer. It can reset all codes and determine their cause.
How do i reset my service light on my 2004 Nissan
How to reset service light on a 2004 grand am
There are pages and pages and items that can cause a check engine light. You need to have it checked for codes with a scan tool.
The check engine light (service engine soon) comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, the problem is in the emissions or something that is affecting the effectiveness of the emissions, but other causes can trigger the light to come on, too. To determine the cause, the vehicle will need to be taken to AutoZone or a shop that has an OBD2 scanner, or for 1995 and earlier models, an OBD1 scanner, While a scanner will not give you the magic answer, it will give you a code that narrows down the problem area.
When resetting the check engine light on any vehicle after a repair, a diagnostic tool is recommended. A simpler way requires disconnecting the battery from the vehicle for 5 seconds, unfortunately this will reset the radio as well.
Either try disconnecting the battery for about 10 minutes or have the vehicle scanned to determine the problem and have codes cleared
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i have replaced the plugs and wires and my service engine light comes again in 2004 land rover discovery