Oil leak line near oil filter. 2001 hyundia sonata

SOURCE: transmission filter on 2003 hyundia santa fe

In 2002 they discontinued the external trans filter. So your vehicle could have the external filter. If you look next to the trans dipstick tube, on top of the trans case you will see the filter or you will see just a spot where the filter use to go before they eliminated it. Yes, the filter does llok like a regular engine oil filter. If the trans does not have the external filter ontop then there is no service to the filter to be done, the only recommendation is to bring vehicle into a shop to have the fluid flushed. By the way, make SURE you use the correct Hyundai SP-III trans fluid (not dexron/mercon). This fluid is specific to the Hyundai and can not be purchased from auto parts stores, only the dealership. Failure to use SP-III will cause premature wear to the internal bands and clutches.

SOURCE: Major oil leak after oil change

Your filter was installed either without the rubber seal, or the seal wasn't lubed before installation and it slipped, causing an improper seal. You will have to drain the oil again, remove the filter, and make sure it is reinstalled with a proper seal.

SOURCE: Engine knock noise on cold startup

these 3.3l engines are equipped with timing chains. if vehicle has prolonged down time, typically more than 4 hours, vehicle makes a chatter until the timing chain tensioners put tension on the chain. you will need them replaced.

SOURCE: Power steering fluid leaking.

Year and mileage? Keep the fluid level up so you don't damage the power steering pump, and return to the garage that serviced it. This sounds like something wasn't tightened properly, and they should correct the problem. It is possible that a power steering hose or the pump itself developed a leak, but, it is most likely something that wasn't tightened properly. That's the best diagnosis that can be given w/out actually being able to see the vehicle.

SOURCE: hyundai 2001 sonata power steering fluid leak

The power steering fluid (which is the same color as the auto transmissioin fluid)...can come from 1 of 4 places, the power steering reservoir, power steering pump, power steering rack, or the connection lines........

Where it is coming from will depend whereabouts it is leaking, if it is more towards the front of the car (engine), power steering poump would be the likely option.......however if it is more under the driver/passenger area under the car, this would be more likely be the rack...

I would suggest washing the vehilce down with high pressure wash, inlcuding underbody and engine area......let dry, take for a drive (15-20 minutes), then leaving on reasonably clean driveway/roadway...and see where it is leaking from...what area...then get a torch and trace to where it maybe coming from