I don't know why either, but you can find out why. Check out the manual at
and read the introductory stuff at the front, up through page 17 of the PDF
(it's a quick read). Your car is covered on page 19 of the PDF, near the
bottom, and the codes are listed on page 24. The pages from 21 through 24
are important stuff too. Yours doesn't require the "tool" they talk about,
but it's just a shorting plug anyway. I bought that and the manual in
paperback form for $35 US before I found out it was on line :-(
Once you get the code(s) we can help you more.
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.