Hi, all new to the forum. Just wanted to give a little background about myself. I just recently sold my Infiniti G35 Coupe wanting to get something with a little more space. I recently purchased an Audi A4 2006 6 MT with 61k miles immaculate condition. However there is one small problem. The cruise control does not work.

I have read threads on this subject on the AudiWorld, and AudiForums, and was hoping someone could give me an idea that I may have overlooked.. or confirm my diagnosis.

At first I thought it could be a clutch sensor. But I notice I cannot start the car without depressing the clutch. I also do not get any weird revs. The cruise control light does not come on when I attempt to activate it. And just to make sure I get the procedure right, I pull it back toward the steering wheel and press the button to set it at speed. Nothing happens, no cruise icon light on the dash, nothing. So I assume it is a problem with the stalk? Maybe lose connections? Or is there another module I need to take a look at? I am savy with electronics, however, I dont like to take things apart without knowing generally what is going on. Can anyone provide any input?

 

New thought, maybe it could be the stalk?

 

when you pull the stalk and push the button make sure you push the button with a bit of force or just push it twice. sometimes i find it "ignores" light pushes of the button and doesn't cruise until you push it "assertively".

 

there are 2 clutch switch, 1 that says the clutch is in, and 1 that says the clutch is fully out, so just because u cannot start ur car with the clutch out, doesnt mean u dont have a bad clutch switch.

 

I tried doing what you said recently, and pushed with at least 3-5 pounds of pressure at that one spot. Nada.

 

Hmm... so two clutch sensors... So basically the depressed sensor could be working, however the "out" sensor may not be. Interesting theory. Now can the cruise control "On" light come on without actually setting it? I had a car that did that, but until you engaged it, the function doesnt work. If thats the case, with this car, then at least I can isolate it to the actually ****.

Another question for you guys is, are all of the cruise controls electronics isolated to the stock? I'm thinking oxidized connections and the like...

Is there was a way to do a positive test electronically, or otherwise to ensure the switch was sending the signal?

 

Hmm... so two clutch sensors... So basically the depressed sensor could be working, however the "out" sensor may not be. Interesting theory. Now can the cruise control "On" light come on without actually setting it? I had a car that did that, but until you engaged it, the function doesnt work. If thats the case, with this car, then at least I can isolate it to the actual ****.

Another question for you guys is, are all of the cruise controls electronics isolated to the stock? I'm thinking oxidized connections and the like...

Is there was a way to do a positive test electronically, or otherwise to ensure the switch was sending the signal?

 

On mine, the light doesn't come on until you set it. I leave it "On" all the time, but I only see the light when I push the button on the end of the stalk to set the speed.

 

Have any of you ever have the dealer turn off your cruise control by accident? As in disable it? I am wondering since not all A4 B7s are equipped as such...