2005 Infiniti G35X 60,000 miles Rattling noise at low speed (5-20MPH) - on right side (under the car)

Honestly Joseph its not gonna be worth trying to fix because there could be thousands of dollars worth of damage to it.

The icon is getting wet its The top right passenger side. Look under the vents on the passenger side in front of the window.

It's the anti-sway bar endlinks. My '06 g35x has the same symptoms - clunking at low speeds, varying from which side of the car the noise comes from as to which side of the car is hitting bumps in the road surface. EASY to replace yourself with the front end on jack stand, and you don't even need to remove the underbody plastic panel, so it's quicker than an oil change. To verify this is the problem before you order the parts (which are about $100 for the x, as it's a different part altogether than the endlinks on the RWD sedans or coupes, so be careful when ordering), just remove the current endlinks and take a test drive - don't worry about removing the whole sway bar, just the links at the ends of the bar). If this is the case, you will not hear the clunking any more. I do not recommend driving like this for any distance, as the car will become tail happy and your sway bar ends could point towards the ground while left unsupported and become damaged.

your sending unit inside the tank need replaced! or the electrical plug is lose or lack of ground,

its doesnt seem like a unfair price but you could try doing it yourself if you are mechanically inclined - but the job is a fair size to do

Maybe its an exhaust rattle?

It can be the air flow meter,check it if it not disconnected ,the sensor is on the aspiration

could be a manifold leak....while the car is running youll hear air fluttering from the car

have them recheck the timing, the belt may be out one tooth and they need to reline up the timing marks, it never should have left the shop like that.

Usually the lines under the icon means water. check your water level it may be low. let me know if this helps you.