rattle under my a4

[agregano]

when the car first starts there is a (marble in a tin) kind of sound right under the driver seat? and ideas? thansk

[bshusted]

The best way to find it will be to stick your head under the car while it's rattling and pin point the source. The two things that used to rattle on mine were the exhaust heat shield and the engine undertray.

[b5blazing]

Except that would happen the whole time the car is on not at start up.....
Better description requested

[agregano]

Where is the engine undertray ill jack it up this Thurs and look at it

[b5blazing]

Where is the engine undertray ill jack it up this Thurs and look at it

^^^^
Big plastic tray under engine between oil pan and road