Q: ,The doors lock and unlocks all the time. I thought it is a relay. Can anyone tell me if that's the case?

All three of these codes are for the transmission and indicate you have issues with shift solenoids and gear ratio problem. Each code is a problem with a different part of the transmission and would require separate diagnostics for each...

If she uses regular oil (https://www.yourmechanic.com/article/can-you-switch-between-regular-and-synthetic-motor-oil), I'd change it every 4,000 or 5,000 if I were her. You can change your oil (https://www.yourmechanic.com/article/when-should-i-change-my-oil) every 6-8,000 with synthetic, but I wouldn't change regular every 6,000. If you do a lot of...

Hi there. From the description you provided, it is unlikely, the ECM (electronic control module) is at fault. First and most important, when disconnecting the battery, always disconnect the negative terminal first and reconnect last. Starting with the positive terminal,...

The intake has coolant cross over tubes that directs coolant from one cylinder head to the other. If you have a crack in the intake manifold and it is leaking coolant (https://www.yourmechanic.com/services/coolant-is-leaking-inspection) then when the engine is running and cooling...

Hi There, The oil pressure light will usually come on when a few things could be happening. Either the motor is in fact low on oil, the oil pump could be failing or the oil pressure sending unit (https://www.yourmechanic.com/services/oil-pressure-sensor-replacement) is...

If you are referring to the "heater core", which is the metal assembly under the dash that looks like a mini radiator and through which heated coolant flows, for your make and model that part costs anywhere from $75 to...

Hello, thank you for writing in. The check engine light, reduced power light, and general loss of power are very likely all connected to one or two simple issues. Luckily with the check engine light on, the computer has detected...