New Repairs and question

[StefX]

Just after replacing front brake pads I had a bunch of new non related fault symptoms.. sighh

I am thankful I bought Extended warranty! had the beast since 2013 and no problems until now.

at 61,000 miles..2011 e70 N55
1. Clunking sound from front suspension over anything uneven
2. Rattling sound from front end but just reaching 2000rpm and up to 2300 and then goes away, idle and driving, slight change with A/C off but not much.
3. Noticable thumping in between shifts, feel it in the frame, more like studdering or fuel delivery problem.
4. grand finale, eng overheat out of nowhere.. shut it down and waited 10min, started up and ran fine while I slowly drove to the dealer.

Shop report.

1. front strut bushings shot..
2. Suspossedly water pump (makes sense for the overheat) I thought it was the tensioner..
3. no finding!
4. Water pump

additional finding, oil leak from valve cover gasket and weak battery!

Warranty covering all but weak battery, dealer quote $450 to replace battery.

I have never had any symptoms of a weak battery, should I run and replace it?