Q: Today I took my 2009 Elantra Touring for an oil and filter change. Driving home after that, both ABS and ESC OFF lights came on.

A number of things may have occurred when the jumper cables were reversed. The battery cables themselves may be fried and require replacement in order to start the vehicle. The PCM or the main computer in your vehicle may also...

It is possible that during the battery replacement and oil change that something was unplugged accidentally. It is also possible that the battery could have been installed incorrectly. If the engine is cranking it is turning over. If everything was...

Can you see where the coolant is leaking? How often are you having to add antifreeze, always remember when you're having to add coolant to a system, if you don't add at least a mixture of coolant you will dilute...

Hi there. If there is a grinding noise when trying to crank the engine then most of the time it is caused by the starter failing (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-starter). If the starter gear is not engaging correctly then this will occur. It...

Hey there, thanks for writing in about your 2005 Pontiac GTO. Worn idler pulleys (https://www.yourmechanic.com/services/idler-pulley-replacement) or accessory components along the belt drive system may make noise as a sign the bearings are failing (https://www.yourmechanic.com/services/wheel-bearings-replacement). As far as the brands, stick...

Hi there: This sound could be caused by the actual radiator fan being slightly bent, a drive pulley that's damaged or even the serpentine or drive belt that's wearing out. There are other issues that could be causing this problem,...

Hello - you still have problems with your transmission (https://www.yourmechanic.com/article/does-an-automatic-transmission-have-a-clutch), most likely in the valve body. This is a common problem with this model transmission, and requires a rebuild or replacement of the valve body to correct. The problem codes...

Hi there. The transmission may have a failed harness or a failed computer (TCM). With having all of the shift solenoids and the torque converter clutch not functioning correctly, then there is a connection error. Remove the harness to the...

I am unable to tell you exactly what is going on with your vehicle without more information, but I can give you the information I have available on the diagnostic trouble codes (DTC's) that you have listed. The P0725 relates...