Engine Revving Higher with brake pedal depressed & Car In Drive
02-22-2012, 11:02 PM
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Engine Revving Higher with brake pedal depressed & Car In Drive
Hello Everyone,
I would appreciate any members comments/thoughts on the following. I have been scanning this site and googling around and have not been able to find relevant data that points to the following. This situation has happened two times since I bought the 2012 Q5 3.2 Prestige in September, 2011. I would also add that we have a 2010 Q5 3.2 as well and we have not had these same issues on that car. Here is what has happened.
Both incidences occurred with temperatures in the 25 to 30 degree range. I had driven the car for 10 minutes under one circumstance and over 30 minutes the other time. In both instances I came to a stop to let out passengers while keeping the gear in drive and depressing the foot brake. In both instances, the conversation went for more than 45 seconds as they were getting out. However, what occurred in both instances is that the engine would start revving up to 1500 RPM's. I would then shift the gear into park with the goal of gradually releasing my foot off the brake pedal. However, in both instances, as I shifted into park, the engine revved even higher before it settled down.
The other issue that I have noted that I am wondering is related is the fact that as I accelerate the car, it stays in a much higher rev state for a longer period of time before it shifts gears [versus our 2010 3.2]. Am wondering if Audi changed their rev states [keeping them in a higher range] so as to fix the issue with transmission shifting issues from first to second gear that was a problem early on with the Q5?
One other comment, we do have the winter mats down that we purchased with the car directly from Audi so we do not believe it's an issue of the mats weighing on the pedal, causing the revving/acceleration.
Would appreciate members insights here.
I would appreciate any members comments/thoughts on the following. I have been scanning this site and googling around and have not been able to find relevant data that points to the following. This situation has happened two times since I bought the 2012 Q5 3.2 Prestige in September, 2011. I would also add that we have a 2010 Q5 3.2 as well and we have not had these same issues on that car. Here is what has happened.
Both incidences occurred with temperatures in the 25 to 30 degree range. I had driven the car for 10 minutes under one circumstance and over 30 minutes the other time. In both instances I came to a stop to let out passengers while keeping the gear in drive and depressing the foot brake. In both instances, the conversation went for more than 45 seconds as they were getting out. However, what occurred in both instances is that the engine would start revving up to 1500 RPM's. I would then shift the gear into park with the goal of gradually releasing my foot off the brake pedal. However, in both instances, as I shifted into park, the engine revved even higher before it settled down.
The other issue that I have noted that I am wondering is related is the fact that as I accelerate the car, it stays in a much higher rev state for a longer period of time before it shifts gears [versus our 2010 3.2]. Am wondering if Audi changed their rev states [keeping them in a higher range] so as to fix the issue with transmission shifting issues from first to second gear that was a problem early on with the Q5?
One other comment, we do have the winter mats down that we purchased with the car directly from Audi so we do not believe it's an issue of the mats weighing on the pedal, causing the revving/acceleration.
Would appreciate members insights here.
02-23-2012, 04:47 AM
#3
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I think what you are doing is stepping on the brakes and gas pedal at the same time, I have read a few owners who have done that. The pedals on the Audi is very close together.
02-23-2012, 07:12 AM
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GMan,
Thanks for your comments. I had heard of others doing that via this forum. For that reason, I have been particularly cognizant of not doing that in the car. Also, this never occurred with 2010 Q5.
Thanks for your comments. I had heard of others doing that via this forum. For that reason, I have been particularly cognizant of not doing that in the car. Also, this never occurred with 2010 Q5.
02-23-2012, 07:22 AM
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Update to Engine Revving Higher with brake pedal depressed & Car In Drive
Hello Everyone,
Thanks for the early responses. I was remiss in mentioning one other key point last night that may be causing this revving. First off, I have the heater on in the car when the door is open. So it's plausible that what is happening is when the door is open for this period, heat escapes, the car is then looking to warm itself up to the right temperature, and in response the engine revs up to generate heat because we are not in motion.
At the same time, issue number two: "a higher rev state for an extended period of time" appears to point to a timing issue? Thoughts?
Thanks for the early responses. I was remiss in mentioning one other key point last night that may be causing this revving. First off, I have the heater on in the car when the door is open. So it's plausible that what is happening is when the door is open for this period, heat escapes, the car is then looking to warm itself up to the right temperature, and in response the engine revs up to generate heat because we are not in motion.
At the same time, issue number two: "a higher rev state for an extended period of time" appears to point to a timing issue? Thoughts?
Hello Everyone,
I would appreciate any members comments/thoughts on the following. I have been scanning this site and googling around and have not been able to find relevant data that points to the following. This situation has happened two times since I bought the 2012 Q5 3.2 Prestige in September, 2011. I would also add that we have a 2010 Q5 3.2 as well and we have not had these same issues on that car. Here is what has happened.
Both incidences occurred with temperatures in the 25 to 30 degree range. I had driven the car for 10 minutes under one circumstance and over 30 minutes the other time. In both instances I came to a stop to let out passengers while keeping the gear in drive and depressing the foot brake. In both instances, the conversation went for more than 45 seconds as they were getting out. However, what occurred in both instances is that the engine would start revving up to 1500 RPM's. I would then shift the gear into park with the goal of gradually releasing my foot off the brake pedal. However, in both instances, as I shifted into park, the engine revved even higher before it settled down.
The other issue that I have noted that I am wondering is related is the fact that as I accelerate the car, it stays in a much higher rev state for a longer period of time before it shifts gears [versus our 2010 3.2]. Am wondering if Audi changed their rev states [keeping them in a higher range] so as to fix the issue with transmission shifting issues from first to second gear that was a problem early on with the Q5?
One other comment, we do have the winter mats down that we purchased with the car directly from Audi so we do not believe it's an issue of the mats weighing on the pedal, causing the revving/acceleration.
Would appreciate members insights here.
I would appreciate any members comments/thoughts on the following. I have been scanning this site and googling around and have not been able to find relevant data that points to the following. This situation has happened two times since I bought the 2012 Q5 3.2 Prestige in September, 2011. I would also add that we have a 2010 Q5 3.2 as well and we have not had these same issues on that car. Here is what has happened.
Both incidences occurred with temperatures in the 25 to 30 degree range. I had driven the car for 10 minutes under one circumstance and over 30 minutes the other time. In both instances I came to a stop to let out passengers while keeping the gear in drive and depressing the foot brake. In both instances, the conversation went for more than 45 seconds as they were getting out. However, what occurred in both instances is that the engine would start revving up to 1500 RPM's. I would then shift the gear into park with the goal of gradually releasing my foot off the brake pedal. However, in both instances, as I shifted into park, the engine revved even higher before it settled down.
The other issue that I have noted that I am wondering is related is the fact that as I accelerate the car, it stays in a much higher rev state for a longer period of time before it shifts gears [versus our 2010 3.2]. Am wondering if Audi changed their rev states [keeping them in a higher range] so as to fix the issue with transmission shifting issues from first to second gear that was a problem early on with the Q5?
One other comment, we do have the winter mats down that we purchased with the car directly from Audi so we do not believe it's an issue of the mats weighing on the pedal, causing the revving/acceleration.
Would appreciate members insights here.
02-23-2012, 07:46 AM
#6
AudiWorld Super User
Heat demand will not cause the engine to rev to 1500 rpm. The reason why it starts to rev higher as you put it into park is that you are getting nervous and you are pushing the brake pedal harder in an attempt to keep the car stationary, but the toe of your shoe is actually on the gas pedal. Next time when it happens, shift the car into natural and let go of the brakes, the rpm should go back to normal. If that’s the case, you have big feet like me 
02-23-2012, 07:53 AM
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You can also try turning on the electronic hand brake, even in drive. See if the revs go up then. Once you step on the gas, the brake releases automatically. However, for dropping people off, its probably safer all around putting it into park.
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02-23-2012, 08:00 AM
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02-23-2012, 08:14 AM
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GMan - thanks again for your prompt response.
Just to clarify, the engine is revving up to 1500 before I begin the process of putting it into Park. In other words, I follow exactly what you are saying and what you are suggesting could explain why it revs "even higher" when I begin putting it into park. BTW - am assuming you mean shift the car into neutral versus natural?
Just to clarify, the engine is revving up to 1500 before I begin the process of putting it into Park. In other words, I follow exactly what you are saying and what you are suggesting could explain why it revs "even higher" when I begin putting it into park. BTW - am assuming you mean shift the car into neutral versus natural?
Heat demand will not cause the engine to rev to 1500 rpm. The reason why it starts to rev higher as you put it into park is that you are getting nervous and you are pushing the brake pedal harder in an attempt to keep the car stationary, but the toe of your shoe is actually on the gas pedal. Next time when it happens, shift the car into natural and let go of the brakes, the rpm should go back to normal. If that’s the case, you have big feet like me
02-23-2012, 11:30 AM
#10
if the engine RPM increases when you step on the brakes with the car in drive and/or park you could have a leak in your brake booster and/or vacuum line.
Engine idle speed should change a bit when the a/c compressor comes on (and yes it does come on even when it is 25 degrees out if you have it on auto), but it should not cause it to rise to 1500rpm.
The other possibility is as stated before that the driver could be fat-footing 2 pedals.
Engine idle speed should change a bit when the a/c compressor comes on (and yes it does come on even when it is 25 degrees out if you have it on auto), but it should not cause it to rise to 1500rpm.
The other possibility is as stated before that the driver could be fat-footing 2 pedals.