Generally, you will need to notify the dealer or manufacturer of the defects within a certain period of time after purchasing the vehicle. The time limit for notifying the dealer or manufacturer may be as short as a few days or as long as several months, depending on the jurisdiction. You will also need to provide the dealer or manufacturer with a description of the defects.
If the dealer or manufacturer is unable to repair the defects within a reasonable period of time, you may be entitled to return the vehicle and receive a refund or a replacement vehicle. In some jurisdictions, you may also be entitled to compensation for any damages you have suffered as a result of the defects, such as transportation costs, repairs, and loss of value.
To protect your rights, it is important to keep all of the documentation related to your purchase of the vehicle, including the sales contract, warranty, and any repair orders. You should also keep records of any communications you have with the dealer or manufacturer regarding the defects. If you are not satisfied with the dealer's or manufacturer's response to your complaints, you may need to file a complaint with a local consumer protection agency or file a lawsuit in court.