Rattle, Cat Converter?

[J44Y]

Hi everyone,

My Is200 (53 plate) has developed a rattle in the last week under the car from around the front passenger/driver area. Its only after the car has warmed up and done a mile or two, and only when moving and at low speed (10-30mph). Its not loud loud, but if windows are open, you can hear it. There aren't any weird smells coming either.

I have asked a few local garages, who have ramped the car up and checked underneath and nothing is moving about physically with the whole exhaust system front to back. One garage, say it could be the gaskets for the manifold and another said it is the cat is knackered and is rattling inside itself. They checked the brakes and it defo isn't them sticking, etc.

The car has only done 44k miles. Is it common for a cat to go so early on the Is200?

Has anyone else has this same rattle problem arise on there lex? If it is the cat, I'm probs looking at bucks to sort.

I'm getting no lights or anything flashing, which when I did a search on the forum said may come up on the dash.

Any advice peeps?

[J44Y]

I have been advised its the heat shield rattling around. My mechanic is gona bend and fiddle about with it to secure it properly.

If it persists then I will change the whole damn thing.