Q: How do I adjust the volume of the stereo system?

You should periodically check your brake fluid levels to make sure that you have enough fluid in the system. To check the brake fluid, pop the trunk, and locate the brake fluid reservoir. Make sure that the fluid level is...

The lighting system on this vehicle is computer controlled through a smart control box in the passenger compartment on the left side of a pilar. The water in the light could of shorted the module and burned out the module...

The noise you hear when first starting is the oil pressure building up, and the hydraulic cam followers getting pressurized. Once they get oil pressure, then the noise goes away. Try using only the Ford FL820S oil filter, and only...

You did not mention what motor or transmissions either of the vehicles have. These are the biggest and most expensive repair concerns on any used vehicles. Firstly, I would not recommend buying a used vehicle (https://www.yourmechanic.com/article/how-to-buy-a-used-car) without having a qualified...

If cluster fuses are good, check/clean the battery ground, bot the terminal and where the ground cable connects to the chassis. If that doesn't help, then you have a bad instrument cluster and it will have to be replaced.

Thanks for writing in. If the pull is constant, then you may have worn suspension components like control arm bushings. You should have the entire front suspension checked for worn components. If you'd like, a YourMechanic certified technician can come...

Hi there. Usually when electrical components inside the vehicle become wet, it will only take one exposed wire to short out a relay or fuse panel. There are several electrical components that operate all of these systems that may have...

Hi there. Sometimes a dragging emergency brake or warped front brake rotors can cause the symptoms you're describing. In worse case scenario, there may be internal damage inside the transmission or the torque converter of your Optima. I would recommend...

Any bad part in the drive train can put additional stress on other parts. I could probably draw a line from a bad wheel bearing to a bad CV joint. Not so much the other way. However, it might seem...