How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask AudiDoc Your Own Question

AudiDoc
AudiDoc, Independent Audi Shop Owner
Category: Audi
Satisfied Customers: 6426
Experience:  I've been working on Audis since I was 18 and own an independent Audi repair and performance shop
14582033
Type Your Audi Question Here...
AudiDoc is online now
A new question is answered every 9 seconds

Audi 3.0: I have 2004 Audi A4 Convertible 3.0 The problem is

Resolved Question:

I have 2004 Audi A4 Convertible 3.0 The problem is when AC is switched on it doesn't give cool air rather its a exhaust of hot air. Not sure what is faulty. and how much will it cost to get it repaired
Submitted: 1 year ago.
Category: Audi
Expert:  AudiDoc replied 1 year ago.

AudiDoc :

Hello, I'm Jason. I will do my best to answer your question quickly and accurately using the information you have provided.

AudiDoc :

Since it doesn't sound like any diagnosis has been done yet, I can only give you some pointers, and common reasons for this

AudiDoc :

The first thing that fails is the high pressure refrigerant sensor on the right side of the AC condensor inboard of your right headlamp

AudiDoc :

Second most common reason for this is a leak, that will require the system to be recovered, evacuated, recharged and ultraviolet dyed in order to determine the leak source

AudiDoc :

there are a small hose of other sporadic faults, which will require an Audi specific scan tool to communicate with the HVAC computer to determine

AudiDoc :

checking to see if you're able to respond

Customer:

Sounds like i have to take it to dealership or a mechanic to get it fixed

Customer:

any idea how much it will cost based on defect

AudiDoc :

well, as is often the case with AC problems, possibly

AudiDoc :

if it's the high pressure switch, this is quite an easy fix

AudiDoc :

costing no more than $200 parts and labor

AudiDoc :

to do leak checking as I indicated should be about the same money, and if the leak is extremely small, then you may even consider not fixing the leak until the system runs low again

Customer:

is there any way i can check if high pressure switch is off

AudiDoc :

If you have a multimeter with a pair of wire piercing probe attachments, yes

AudiDoc :

you'd need to remove the passenger headlamp

AudiDoc :

start the car, turn the ac on, check for power on either side of the switch

Customer:

ok

AudiDoc :

if it's powered, good. Then remove connector to switch and jumper the connectors on the harness with a piece of insulated wire

Customer:

is there can be a case if freon is not able to interact with AC system

Customer:

and hence no cooling effect

AudiDoc :

not exactly sure the question

AudiDoc :

this car doesn't use freon as a refrigerant

AudiDoc :

if there isn't R134 refrigerant in the system, then they system will not turn on

Customer:

yesterday one mechanic take a look at the car and said somehow Freon is not able to go to the AC system hence its not working so just checking if that can be the case

AudiDoc :

I would avoid using that mechanic if that is the explanation.

AudiDoc :

since the car doesn't use freon

Customer:

ok got it...thanks for the help..i will take it to some recognized service ceter

Customer:

*center

AudiDoc :

but if he's talking about not being able to introduce refrigerant into the system, that is a very rare problem

AudiDoc :

and likely not the case for you

Customer:

ok

AudiDoc :

Check in your area for European car specialist

AudiDoc :

or independent Audi shop

AudiDoc :

that will save money from going to the dealer

Customer:

thanks a tonne for the help

Customer:

have a great day

AudiDoc, Independent Audi Shop Owner
Category: Audi
Satisfied Customers: 6426
Experience: I've been working on Audis since I was 18 and own an independent Audi repair and performance shop
AudiDoc and 2 other Audi Specialists are ready to help you

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P Elm City, NC
< Last | Next >
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P Elm City, NC
  • used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future. David L. Richmond, TX
  • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil Marysville, CA
  • Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible. Charles Walnut Creek, CA
  • As a single woman, I really appreciate an excellent and affordable opinion.
    Thank you Geordie, I will not hesitate to contact justanswer in the future!
    Sue Charleston, WV
  • Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff. Jim Castleberry, FL
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
 
 
 

Meet The Experts:

 
 
 
  • AudiDoc

    Independent Audi Shop Owner

    Satisfied Customers:

    1681
    I've been working on Audis since I was 18 and own an independent Audi repair and performance shop
< Last | Next >
  • http://ww2.justanswer.com/uploads/audidoc/2008-12-23_175252_headshot.jpg AudiDoc's Avatar

    AudiDoc

    Independent Audi Shop Owner

    Satisfied Customers:

    1681
    I've been working on Audis since I was 18 and own an independent Audi repair and performance shop
  • http://ww2.justanswer.com/uploads/35/350matt/2012-6-7_182356_matsavatr.64x64.jpg Matt's Avatar

    Matt

    Engineer

    Satisfied Customers:

    461
    Mechanical Engineer with 20 years experience in the auto industry, 8 yrs in formula 1 engine testing
  • http://ww2.justanswer.com/uploads/MI/mikeamechanic/2013-4-2_175558_photo.64x64.JPG Mike Kelly's Avatar

    Mike Kelly

    Audi Mechanic

    Satisfied Customers:

    259
    17 years experience as a auto mechanic, foreign and domestic.5 years running my own repair business.
  • http://ww2.justanswer.com/uploads/FourRingsTech/2010-01-26_135603_GetAttachment.jpg Michael Miller's Avatar

    Michael Miller

    ASE Certified Technician

    Satisfied Customers:

    241
    ASE Master Technician. Audi certified, including R8 and TDI (clean diesel).
  • http://ww2.justanswer.com/uploads/NA/nabilc/2011-1-24_205715_jap500.64x64.jpg Billy's Avatar

    Billy

    Trainer/Master tech.

    Satisfied Customers:

    229
    Trainer 8+ years, Master tech. 10+ years, SAE member
  • http://ww2.justanswer.com/uploads/tsmodie/2009-6-10_144056_tim.jpg Tim Mohr's Avatar

    Tim Mohr

    ASE MASTER TECH

    Satisfied Customers:

    204
    30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL
  • http://ww2.justanswer.com/uploads/CA/caprio23/2011-12-13_155550_20111213105344.64x64.jpg Anthony's Avatar

    Anthony

    ASE Certified Technician

    Satisfied Customers:

    174
    ASE Master Automobile Technician with over 20 years exp. in this field.