All 2004 Audi S4 questions

The other day on my way home my car lost power lights ect. Went to have batt. tested, said was be...

my b6 s4 has been taking a long time to start in cold weather when i turn key the car does nothin...

i Changed the valve, I erased the check engine light, but still get the same code after driving 2...

my audi s4 will turn over for ages before it will start,but only happens when cold seems fine whe...

does anyone no where the engine mount solenoid valve is & what it does & should it be rep...

every so often more so when sitting idling the coolant temp warning light flashes up on the clust...

got water leak at front o/s bumper think its the washer bottle,will this need replaced?or does an...