也许那些都不是直接原因，只是很多可能中的一个，那就从简单，又贵容易赚钱的部件一个一个更换策略。

一直到更换一遍，问题也能解决的。查一下，简单如PCV阀门等。看例子：

Vacuumman answered 8 months ago

My sons 2006 Audi A4 turbo was giving intermittent oil warning lites. On and then of. Very unnerving. We could not find anything wrong with the car. A blog said it might be a defective relay. Changed that ,no luck. Then the car started squealing for a second or two when it was turned off. We consulted a crusty old mechanic with extensive history on forien cars. He said it could be caused by a vacume in the crank case. Sure enough when we tried to take the oil filler cap of with the engine running it wouldn't budge. With the engine off it came off normally. I started the car and my son put his hand over the oil filler cap hole. Almost sucked the blood thru his skin. I had to shut the car off to get his hand loose. The mechanic said it was probably a bad PVC valve. We took the PVC valve off and found there was a part of the valve that was missing. After replacing the PCV valve the problem was solved. The high vacuum in the crank was fighting the oil pump pressure and may have been causing other problems. Cost of the fix was $50.00 for the PCV valve plus 30 minutes labor.

LmtLaura answered 3 months ago

I previously had a 2007, notorious for this very issue. Through a bit of research, we learned that (I believe it was 2007's and 08's) all Audi's in that time frame had bad oil pressure pumps.(recall was refused by Audi, and a $3000 repair at the dealer). When you drove for more than an hour, boom, oil pressure light came on. We went with a heavier weight oil, and through trial and error, learned that if you drive in sport mode, with the higher rpms, light comes on less frequently. I'm sad to see this is about a 2015, I've been looking to get a newer model, but this has me rethinking. :(

 

 

 

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• 谢谢专业解答，我是小白手残党，欲哭无泪。。。 -每日一学- ♀ (0 bytes) () 06/14/2018 postreply 16:08:59