I have 2011 Audi S4, the EPC light has been coming on int...

I have 2011 Audi S4, the EPC light has been coming on intermittently giving error codes P10A4, P10A7, P10A8...also have 1 bad motor mount on right front passenger side. Mechanic's Assistant: Just to clarify, what are the e...

I have 2011 Audi S4, the EPC light has been coming on intermittently giving error codes P10A4, P10A7, P10A8...also have 1 bad motor mount on right front passenger side. Mechanic's Assistant: Just to clarify, what are the exact lights you're talking about? EPC engine power control Mechanic's Assistant: Are you fixing your Audi S4 yourself? What have you tried so far? Just cleared the codes, as they do not always appear Mechanic's Assistant: Anything else you want the Mechanic to know before I connect you? The car runs sluggish, due to EPC and the intake flap not regulating. I had the transmission checked and there is nothing wrong there, found the motor mount was also bad.

Automotive Expert
Hello, my name is \*\*\*\*\* \*\*\*\*\* I will be helping you with your question today. I've been working on Audis for over 30 years now, so I should be able to help you through this. Please understand that some of my suggestions may require special diagnostic tools and equipment that many home mechanics may not have, but are often required. So, my first question is whether you're planning on performing your own repairs, or are you wanting to be armed with information before bringing it into your mechanic? **Also, the site automatically prompts for a phone call. It's very rare that I'm available by phone, so let's hold off on that for now. If needed after we exchange some information, I will do my best to take the time for the call.** Couple of other questions: - any recent work requiring supercharger or intake manifold removal? - how many miles are on it?

No I did a transmission flush about 1 month ago, hoping it would help with sluggishness, but EPC error codes keep coming up. 90,000 approximately. Here is photo of errors

Customer attachment 2/8/2021 4:41:58 PM

I used ODBeleven to check the engine.I need someone to do the work
Automotive Expert
Ok, got all of that. You're going to have to replace the bypass valve at the rear of the supercharger. Somewhat common issue. I can look up a part number if you can throw me a VIN

Give me a second
Automotive Expert
Ok, few moments
Automotive Expert
Part number 057 128 063 G Retails for $755 About a ten minute job at the rear of the supercharger. Looks like this: [https://uploads.tapatalk-cdn.com/20200714/36cdf212ad57f65416f671d0036b14c7.jpg](https://uploads.tapatalk-cdn.com/20200714/36cdf212ad57f65416f671d0036b14c7.jpg)

is that including labor ?
Automotive Expert
Nope, just the part. Shop labor shouldn't be more than a half hour.

What about the motor mount?
Automotive Expert
Mounts should be replaced in pairs. They're $378 each Labor is 3.5 hours

Labor per hour
Automotive Expert
Depends on the shop really. Usually an Audi specialist is going to be anywhere from $110-$200/hr depending on your location, but you can reach out to them directly to find out. Also, the labor times are just what we call flat rate times, and shops are free to charge whatever time they deem necessary to do the job. I'm just offering information on what the job \*should\* cost.

OkayMarinating on the info
Automotive Expert
Ok, no problem.

What others are asking

Oil pressure warning light flashing
The first thing I would recommend doing after seeing a warning like that on your vehicle is to check the engine oil level (https://www.yourmechanic.com/article/how-to-check-your-engine-oil). When the oil level goes low, this can cause the oil pressure to go low as...
Why is my battery draining overnight?
Hello. There are a few common issues on this vehicle. Before getting too far into it, I always check to see if there is any aftermarket equipment such as an aftermarket radio. Most of the time, any electronics that are...
Sqealing noise EPC light
Hello. It sounds like it may have a failing alternator (https://www.yourmechanic.com/services/alternator-replacement). If the alternator is failing or if the belt is loose due to a bad belt tensioner (https://www.yourmechanic.com/services/drive-belt-tensioner-replacement) then this will occur. I would check and see if the...
Gear slipping 1st 2nd
Hello there, thank you for asking about your 2010 Mercedes-Benz C63 AMG. The first thing to check would be the transmission fluid level. A low transmission fluid level from a leak can cause symptoms where the engine speed rises without...
Power steering, leak, and groaning noise.
Hi, thanks for writing in. This is a sign of a failing power steering pump (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-power-steering-pump) which is what the groaning sound and stiff steering will come from. It also sounds like you have a major leak (https://www.yourmechanic.com/services/oil-fluid-leak-inspection) coming from...
I replace the hood of my 2009 Chevy Impala with the hood of a 2007 Chevy Impala
Yes. The reference I checked, says that 2006-2013 will work.
everytime I turn my car on the ac starts to blow air even if I switch it off. it won't blow cold air or heat.
Hi there. Based on your question and input, it looks like your AC control switches are damaged, causing the vents to activate even if the switch is not activated. This is sometimes an electrical problem, as it could be triggered...
Rear passenger side wheel completely locked up.
It is possible that the parking brake cable has seized, due to rust, at that wheel position. That would be relatively easy to determine based on a visual inspection. If you desire that this problem be diagnosed by a certified...
What all do I need for a power steering pump replacement?
As long as the pump is still full of fluid without any fluid loss then you will need a new replacement power steering pump and enough fluid to drain and refill the system completely. This should be no more than...