I am new to this site. I love my new RL but have a couple of problems which I hope someone can help me with. 1. Car burns too rich, exhaust pipe is black. Dealer says computer should adjust but has been the same for 3 mos. I've had the car. 2. Unusual noise when cold and making sharp right turn (slight metallic grinding sound). Again, dealer has no idea, also difficult to replicate as noise is intermittent. 3. The climate control blows only hot air when switching from Auto to Front Defroster, rather than maintaining the same temperature as set. I tried manually overriding but it seems the defroster defaults to warm air only. I must be doing something wrong as this will be intolerable in the summer. If anyone has any ideas on any or all of the above, I would appreciate your comments. Thanks
