good info
ABS Handling
Thread Starter
Racer
Joined: Oct 2003
Posts: 456
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From: Port Orange Florida
ABS Handling
I just recently traded my 98 pewter vert for an 04 Lemans Edtion vert and just love it. Twice now the DIC has displayed the message "Active Handling Warming Up". What the heck does that mean? Never seen this message before.
Drifting
Joined: May 2000
Posts: 1,917
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From: Southern NH
That is a message related to the Active Handling system calibrating itself and taking longer than expected. Since the AH system uses several sensors including the steering sensor it requires that the car is going in a straight line for a predetermined distance before it considers itself calibrated and ready, so if you're doing dounuts right after you start it could display that message.
It also displays that message if the intake air temp is below a certain threshold to compensate for cold conditions. Since it appears that you're in FL that's likely not the case, so it's possible that the IAT sensor is reporting an erroneous low temp either due to a sensor problem or more likely the connector wiring may be having an intermittent problem.
Check the DIC for codes and see it there are any IAT related.
Overall it's not something to worry about but I would want to know why it's happening.
It also displays that message if the intake air temp is below a certain threshold to compensate for cold conditions. Since it appears that you're in FL that's likely not the case, so it's possible that the IAT sensor is reporting an erroneous low temp either due to a sensor problem or more likely the connector wiring may be having an intermittent problem.
Check the DIC for codes and see it there are any IAT related.
Overall it's not something to worry about but I would want to know why it's happening.
Thread Starter
Racer
Joined: Oct 2003
Posts: 456
Likes: 0
From: Port Orange Florida
No, I was not doing donuts. It happened after starting the car, pulled out of the garage and I left my house to the end of my street (1/2 block) when the message dinged at me. I then shut it down, restarted and it did not come back again. Like I said, this has happened twice now. The car does not get driven that often. The car ahd been sitting for about 3 weeks without starting it. Thanks for the info.
BTW, it was down in the mid to high 40's this week at night.That is cold to me.
BTW, it was down in the mid to high 40's this week at night.That is cold to me.
Last edited by steeleaway; Dec 10, 2006 at 05:48 PM.
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It's a normal message that usually occurs if you make a few sharp turns shortly after starting the car.
It will usually stay on for 10-20 seconds, and then you'll get a "warm up complete" message, and then all is back to normal.
Nothing at all to worry about, and no need to shut the car off to clear it.
It will usually stay on for 10-20 seconds, and then you'll get a "warm up complete" message, and then all is back to normal.
Nothing at all to worry about, and no need to shut the car off to clear it.
Burning Brakes
Joined: Oct 2003
Posts: 1,106
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From: Foresters Falls(near Ottawa) Ont
Originally Posted by Y2Kvert4me
It's a normal message that usually occurs if you make a few sharp turns shortly after starting the car.
It will usually stay on for 10-20 seconds, and then you'll get a "warm up complete" message, and then all is back to normal.
Nothing at all to worry about, and no need to shut the car off to clear it.
It will usually stay on for 10-20 seconds, and then you'll get a "warm up complete" message, and then all is back to normal.
Nothing at all to worry about, and no need to shut the car off to clear it.
Tech Contributor
Joined: Oct 1999
Posts: 41,058
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From: Charlotte, NC (formerly Endicott, NY)
Originally Posted by Y2Kvert4me
It's a normal message that usually occurs if you make a few sharp turns shortly after starting the car.
It will usually stay on for 10-20 seconds, and then you'll get a "warm up complete" message, and then all is back to normal.
Nothing at all to worry about, and no need to shut the car off to clear it.
It will usually stay on for 10-20 seconds, and then you'll get a "warm up complete" message, and then all is back to normal.
Nothing at all to worry about, and no need to shut the car off to clear it.
Bill
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Article about AH
During the 1998 model year, just prior to production of cars with the Active Handling option, the Corvette's ABS brake hydraulic control unit will be relocated to the front of the engine compartment to facilitate quicker Active Handling system "warm-up" and shorten front brake response time when the brake fluid is cold. In temperatures below 14oF, the Corvette's Driver Information Center (DIC) will display an "Active Handling Warming Up" message as soon as the vehicle reaches 6-mph. That's a caution to the driver that Active Handling is not fully-functional yet. As soon as the system warms up, another message "Active Handling Warmed Up" will be sent to the driver via the DIC.
Some changes were made in 2001 for it to be less intrusive and able to activate while driving.
Competitive Driving Mode
The Corvette Active Handling system will be the first of its type to offer dual mode operation. In addition to an "OFF" mode, in which Active Handling is disabled, the system also allows the driver to select a "COMPETITIVE DRIVING" mode for autocross or gymkhana competitions. In this mode, the Active Handling system remains fully-functional -- measuring steering, yaw rate and lateral acceleration inputs as well as applying individual wheel brakes as required -- but the traction control system is disabled, allowing for some wheelspin and oversteer that skilled drivers often find beneficial in competitive driving.
Summary of Active Handling System Modes
ON - Active Handling is automatically enabled when the car is started. This is also true of the ABS brake and traction control systems.
OFF - Like traction control, the Active Handling system may be manually turned off if the driver so desires. This is not true of the ABS brake system which is always enabled.
COMPETITIVE DRIVING - In this mode, Active Handling and ABS are both enabled, but traction control is shut off.
The "OFF" and "COMPETITIVE DRIVING" modes are important features on a high-performance sports car like the Corvette. As mentioned earlier, skilled drivers may find that some wheelspin and oversteer can be beneficial to their lap times in competitive events, and the Corvette system allows them to operate the car in this fashion when appropriate. Chevrolet recommends against selecting these modes for street use.
Limitations
The overall effectiveness of the Corvette Active Handling system, or any similar system, is directly related to available tire traction and the aggressiveness of a given maneuver. Active Handling is designed to work to use existing traction to assist the driver -- but it cannot overcome the laws of physics. The Active Handling system reacts only in extreme situations, and special care should be taken when the system does activate because it's a clear signal that vehicle or tire limits are being exceeded.
http://www.corvetteactioncenter.com/...ehandling.html
Some changes were made in 2001 for it to be less intrusive and able to activate while driving.
Competitive Driving Mode
The Corvette Active Handling system will be the first of its type to offer dual mode operation. In addition to an "OFF" mode, in which Active Handling is disabled, the system also allows the driver to select a "COMPETITIVE DRIVING" mode for autocross or gymkhana competitions. In this mode, the Active Handling system remains fully-functional -- measuring steering, yaw rate and lateral acceleration inputs as well as applying individual wheel brakes as required -- but the traction control system is disabled, allowing for some wheelspin and oversteer that skilled drivers often find beneficial in competitive driving.
Summary of Active Handling System Modes
ON - Active Handling is automatically enabled when the car is started. This is also true of the ABS brake and traction control systems.
OFF - Like traction control, the Active Handling system may be manually turned off if the driver so desires. This is not true of the ABS brake system which is always enabled.
COMPETITIVE DRIVING - In this mode, Active Handling and ABS are both enabled, but traction control is shut off.
The "OFF" and "COMPETITIVE DRIVING" modes are important features on a high-performance sports car like the Corvette. As mentioned earlier, skilled drivers may find that some wheelspin and oversteer can be beneficial to their lap times in competitive events, and the Corvette system allows them to operate the car in this fashion when appropriate. Chevrolet recommends against selecting these modes for street use.
Limitations
The overall effectiveness of the Corvette Active Handling system, or any similar system, is directly related to available tire traction and the aggressiveness of a given maneuver. Active Handling is designed to work to use existing traction to assist the driver -- but it cannot overcome the laws of physics. The Active Handling system reacts only in extreme situations, and special care should be taken when the system does activate because it's a clear signal that vehicle or tire limits are being exceeded.
http://www.corvetteactioncenter.com/...ehandling.html
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Originally Posted by Y2Kvert4me
It's a normal message that usually occurs if you make a few sharp turns shortly after starting the car.
It will usually stay on for 10-20 seconds, and then you'll get a "warm up complete" message, and then all is back to normal.
Nothing at all to worry about, and no need to shut the car off to clear it.
It will usually stay on for 10-20 seconds, and then you'll get a "warm up complete" message, and then all is back to normal.
Nothing at all to worry about, and no need to shut the car off to clear it.
Race Director
Joined: Aug 2003
Posts: 13,421
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From: Lake Mary Florida
Originally Posted by Y2Kvert4me
It's a normal message that usually occurs if you make a few sharp turns shortly after starting the car.
It will usually stay on for 10-20 seconds, and then you'll get a "warm up complete" message, and then all is back to normal.
Nothing at all to worry about, and no need to shut the car off to clear it.
It will usually stay on for 10-20 seconds, and then you'll get a "warm up complete" message, and then all is back to normal.
Nothing at all to worry about, and no need to shut the car off to clear it.
