if i pay 1000 $ in advance for rav4 LS how much will be my monthly Installment.

Depends on your credit and other factors. See your financial advisor or loan officer.

As stated, depends on your credit. If it is stellar, you might need any down, if it is not good, you might need a considerable amount down. Additionally, it would depend on the term, or length of loan you get. I would go to a finance specialist either at your bank, or at the dealership and go from there.

That definitely will depend on your credit and how long you will be making the payments. You wont be able to get an exact number amount without going in and speaking with a sales associate.

I think the minimum down payment they accept is 3000$ and rest of the amount can be put as monthly installments.

Depends on your credit and your apr