Water pump AISIN or OEM Audi
Stock 2018 with 68k. Mine has been solid and a blast to drive. Finally dealing with the water pump issue, but nothing until now.
When I drove a Volvo I just did a belt and water pump every year. OE Aisin one every time.
Aisin is what my shop used when mine started to die at 140k. No problems so far at 150k
Go for Aisin, Toyota just repackages same pump so skip the brand tax.
The pump on my S5 just went out at 50k, almost exactly. $950 for parts and it's actually a pretty simple diy job.
Only have had to do the typical water pump/thermostat (and associated solenoid valves)/motor mounts/lower control arms/oil filter housing gasket.
I used the same kit on my tl and the water pump started leaking 2 years in.
I had a check engine on my SQ7 throwing an under boost code. My brother (a master tech) conferred with a colleague and determined that the water pump was starting to leak and check engine went on because coolant was already finding its way into other components. I wasted no time and just had the work done rather than risk potential bigger issues with turbos etc.
Just had my water pump done on my S4 last week while it was at the dealer for the engine knocking. My Brake pedal was very stiff if the car sat overnight, almost like concrete. The tech found coolant in the vacuum line, the Brake Pedal was losing Vacume and making it extremely stiff after sitting overnight. Turned out my water pump went bad, I never smelled any coolant and did not have any warning lights.
I just replaced the waterpump, thermostat and vacuum system on my B9. Leaked internally into the PCV, I would check the solenoids. Mine has about 68.5k - replaced with the new 6 bolt pump.
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