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.
  • Go back-and-forth until satisfied
    Rate the answer you receive.
Ask Stephen Rothwell Your Own Question
Stephen Rothwell
Stephen Rothwell,
Category: Audi
Satisfied Customers: 816
Experience:  Director at Steve Rothwell Limited
Type Your Audi Question Here...
Stephen Rothwell is online now

I am having a problem with Audi Car, UK, i have check the

Customer Question

Hi i am having a problem with Audi Car
JA: Where are you? It matters because laws vary by location.
Customer: UK
JA: What steps have you taken so far?
Customer: i have check the car with a diagnostics and its giving me error code
JA: Anything else you want the Lawyer to know before I connect you?
Customer: sorry i need a machanic
Submitted: 7 months ago.
Category: Audi
Customer: replied 7 months ago.
I require a mechanic not a solicitor
Expert:  Stephen Rothwell replied 7 months ago.


Thank you for your question my name is ***** ***** I am a fully skilled vehicle tecnician with over thirty years in the trade, hopefully I can help.

If you would like to let me have the vehicle details and the code you have I wiil let you know the area of the problem.

Many Thanks


Customer: replied 7 months ago.
Hi Steve,
Its a Audi Q7 2016 model car. Car is running perfect. The code I am having is B13C813(windshield heater for front sensor system- Open circuit/ short circuit) on a Autel Diagnostics. On dash it says Audi pre sense fault as a warning.Best Wishes
Expert:  Stephen Rothwell replied 7 months ago.

Hi Imran

That code is indicating an fault in the heating and ventilation system screen demist sensor system for the auto setting. It won't affect the running of the motor at all but may prevent the auto de-mist operating.

Given the age of the motor I would imagine its nothing more serious that a loose plug on one of the sensors, but the problem would be accessing the plugs which will be under the dash.

I would also check the codes out using the VAG software as often slight conflicts in the software will cause a code to come up on the Autel software when there isn't actually a problem...

I am presuming you don't have a management light up at all.

I hope this answers your question but do please ask any further details by replying to this thread.

If this does answer your question please click accept and rate me, this allows me to continue. even

after clicking accept you can continue to ask further questions by replying to this thread.

Many Thanks


Expert:  Stephen Rothwell replied 7 months ago.

Hi Imran

I have just rechecked the info, the pre sense fault warning refers to the camera in the screen, the windshield heating refers to the screen heater demister to keep the camera clear, this may be a connection problem to the windscreen and it may be best to get the main dealer to check this out, the vehicle isnt far out of warranty and the dealer may be able to put a good will claim in if it serious. The vehicle may need a new screen to rectify the problem and that will then need setting up.