1999 Mazda Millenia Q&A

1999 Mazda Millenia Question: I have two questions.

1) My car antifreeze boils up after 10 minutes when i am driving it but my car does not over heat 2) The car is automatic but is having problems shifting up, it hesitates -
Answer 1
ck radiator cap and replave if necessary and ck trans fluid level and condition -
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Ok I bought my millenia S in april and everything was fine but all of a sudden whenever I lock my doors a few minutes later the alarm goes off. When I bought the car it didn't have a thing to turn ...
is it likely if you take the car every 6 months for service,tune up,oil change and all the good stuff will you have as many problems as you would if you didn't? (1998 mazda millenia)