Does a 2009 sonata v6 have an audio amplifier and, if so, where is it?

There isn't any reference to an amplifier added to the factory stereo, so it is internally amped. Later model Sonatas (2011 and up) with premium audio do have amplifiers factory fitted (located in the trunk space on the right side behind the trunk liner).

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Anthony

Transmission services are part of routine maintenence. Flushing the system on a high mileage vehicle where the fluid has been neglected can cause issues as it stirs up and removes deposits of varnish and worn band/clutch debris through out the system. Most vehicles are usually drain and fill. Others are pan removal with filter and fluid change. Not many companies still do "flushes" but will recommend one of the above services be performed during routine maintenence

The fuse listing will be on the inside cover of the fuse block. Cars uaually have 2 of them.

The firing order should be on your engine normally on the intake manifold . If your running a V-6 its probably 1,3,4,2,5,6 , But look on your intake to be sure.

The fuse box diagram of the 2009 hyundai sonata is below, have a look

Go to www.hmaservice.com and register your vehicle by VIN #.. you'll then have access to wiring diagrams, shop & owner manuals, service bulletins, campaigns, illustrations and procedures, etc

Not unless you are having problems now .you have a owners manual ,look in there and see when the manufacturer says that these fluids need to be changed ,You can look at the air filter and see if it needs to be changed .The transmission fluid should be good to go until around 60,000 miles or so .you need to check the level of the fluid on the dip stick ,just to make sure it is no leaking .

Im having the same problem with the same car i thought it was the right rear, but if the is rough enough it sounds like all sides.

Same problem here. I repeatedly complained to XM but got no reply. I listen to XM in 2009 Sonata and it was just as bad.

XM is better than AM. Much worse than FM.