Yellow engine warning light and car has rough idle
The yellow engine warning light on my 2002 Audi A4 saloon stays on, the engine idles rough but doesn't cut out. It has high emissions. If I disconnect the -ve terminal and reconnect it the warning light goes out but reappears within a day. Audi garage couldn't fix it. Can you help?
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The yellow light is likely not related to the transmission. It's most likely due to something malfunctioning in the emissions control or brake system. You'll need to scan with a VAG COM to find out what the fault codes are that throw that warning.
you lucky person,you have fitted at factory, a speed warning buzzer,which you can set yourself, to give you a warning that you are exceeding the limit(you set)NOW, i cannot, for the life of me, remember how to set it, but it is in the handbook.
This warning light, nothing to weary about this light comes on when you push in the button
on your dash or when you are driving on roads that need extra traction
the ESP automatically turns on this is just a safety feature your car
I think the fuel has gone bad. it's cloging the injector ports. Try this first remove all fuel from the tank, replace the fuel filter. add 5 gallons of fuel and one bottle of fuel treatment. Run the engine for an hour
this will allow all of varnish from the bad fuel to disolve and clean the injectors. Don't be suprised
if this doesn't totally elimnate the problem chances are the plugs are fouled and need to be replaced also. Good luck
Hope this helps
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You have to find someone who can hook up a diagnostic computer to your system. The code should tell them what system is giving you the problem, then you have to narrow it down from there. I have a mechanic friend who does this for me so I have a clue of the problem before I go to my Audi dealer. The engine warning light could be any number of things.
First of all your car needs too have the battery disconnected but only the negative terminal, usualy black in color if you have caps over the terminals. second wait 10 minutes before you reconnect it. third have a auto parts store hook it up too a code reader, it will tell you everything that you want too know about what is causeing the problems.....most places do it for free as a service.