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Re: check engine light
The light will come on for a variety of reasons. There are dozens of sensors and controls that are all connected to the computer module. When any one of these reports values to the computer that are out of spec, the light will illuminate. This is not always a bad thing. The computer will store trouble codes related to the reason the light illuminated. A technician can "read" the codes and tell you exactly what the problem is and what it will take to fix it.
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I suggest that you STOP at the NEAREST service station and at least check the fluid level with the engine still hot and idling in park on a flat, level surface. Top off the fluid as needed with a type designed for YOUR transmission.
If level is OK, break out the owner's manual to determine if the warning light is simply a notification that you have hit the next "service interval" (based on miles, etc.) and is only a reminder or if it is telling you that something is wrong.
Maybe. did you check the oil, coolant level. automatic transmission fluid? The check engine light will come when your vehicle needs a major service; such as, Now, this an example, OK. Like change coolant, change the automatic transmission fluid, or change differential fluid, or it just needed 3 month, 6 months, 12 months service check up at the dealship. It could tell you even to rotate the tires.
When the check engine light comes on. you vehicle needs some type of preventive maintenance done to this Volkswagen Jetta. You need to get it check out and have them reset the check engine light. GB...stewbison
First thing to do is check your fluid level, which must be done with the engine running. If the level is low, fill to correct level and try again. If fluid level is ok, I suggest changing the trans filter. If that doesn't help, I suggest changing the transmission, or getting it rebuilt.
Check engine light means, that your engine computer pick up a bad signal from one of your engine sensor, the engine will still run good because of back up sensor's,need to have a code reading done to find out what's wrong or it will damage other sensor's, you can go to any auto parts or autozone where they can do a code reading at no charge, get back to us with the code number, so we can help you diag. your trouble code.
sdYour fluid levels can be OK and you can still not be getting oil up to the valves, rocker arms and push rods. I would suggest taking the valve covers off and see if oil is lubricating the above. Please let me know if I can be of any further help.
Often, the brake light on is an indication that the brake fluid is low. You need to locate the brake fluid reservoir in the engine compartment, and check that the brake fluid is up to the recommended level. You can easily top off the fluid, but if it is low this means there is a leak somewhere in the brake system, that needs to be located and repaired. If the brake fluid level is ok and the light is on, the brake system needs to be inspected. Good luck and let me know if you have any questions.
some cars with oil level warning light on, it doesn't mean that its only reading the engine oil level is low, sometime the transmission fuid too. Did you check your transmission fluid if it is ok or not? try to check and let us know, ok.
You can take your car to auto zone or advanced auto or some other car parts store where they will put it on a computer for nothing to tell you the problem. I hope this helps. Don't forget to rate my answer.