thanks for the info
Got "Active Handling recalibrating"
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 264
From: St. Louis, MO
St. Jude Donor '08
It happens when you start moving, but go slow and turn a lot. Like when you are leaving a parking garage and have to go very slow and turn a lot. Normal behavior not to worry.
Thread Starter
Team Owner
Joined: Dec 2002
Posts: 32,074
Likes: 296
From: San Francisco CA
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Racer
Joined: Oct 2001
Posts: 262
Likes: 0
From: Palos Hills IL
Tech Contributor
Joined: Oct 1999
Posts: 41,058
Likes: 9,820
From: Charlotte, NC (formerly Endicott, NY)
Active Handling calibrates after each engine start. The car has to be driven in a straight line above a certain speed for a couple hundred feet. This gives the EBCM time to monitor the steering sensor for minimal movement and to check all 4 wheel speeds to see if they are proper for straight line movement (in turns the wheel speeds on opposite sides of the car and from front to rear are different). Once it sees those conditions it remembers the steering sensor output as being the straight ahead condition.
If it doesn't get a situation where it can calibrate within a certain time it displays Active Handling Calibrating.
Bill
Track Junky
Joined: Jun 2007
Posts: 4,074
Likes: 36
From: Orlando Area
Tech Contributor
Bill, if this message is displayed from time to time, could it be a sign of potential or intermittent failure? I have developed AH/TC/ABS issues in the past few weeks and remember getting this message several months ago. I'm trying to figure out if it's a wheel sensor, steering sensor, or EBCM issue.
Burning Brakes
Joined: Jul 2008
Posts: 888
Likes: 50
From: Oklahoma City Oklahoma
I was busy paying attention to where I was going and just noticed the info. MAYBE it was active handling calibrating. I was about half a mile into a fairly tight course. When the run was done I was expecting to see the little tire warning light had activated but all was normal, I guess....
I had one more run and a 30 minute drive home. Everything seems okay.
I had one more run and a 30 minute drive home. Everything seems okay.
Tech Contributor
Joined: Oct 1999
Posts: 41,058
Likes: 9,820
From: Charlotte, NC (formerly Endicott, NY)
Bill, if this message is displayed from time to time, could it be a sign of potential or intermittent failure? I have developed AH/TC/ABS issues in the past few weeks and remember getting this message several months ago. I'm trying to figure out if it's a wheel sensor, steering sensor, or EBCM issue.
Bill
Track Junky
Joined: Jun 2007
Posts: 4,074
Likes: 36
From: Orlando Area
Tech Contributor
The message is almost always displayed when the proper condtions to allow calibration haven't been met. Driving through a parking lot can delay calibration due to constantly turning the steering wheel and not hitting the proper speed. Wheel speed sensor would shut down all 3 functions of the EBCM so it probably isn't a wheel speed sensor unless you are getting warning messages for all 3 at the same time. Steering sensor is more AH related but TC does use it as well. The early non AH C5s used steering sensors for TC. Depending on the failure the EBCM can also cause problems for all 3 functions. The only way to know for sure is to get the codes checked with a scanner that can read ABS codes. Can't really do any diagnostics on these cars without knowing the codes.
Bill
Bill
Are the codes stored? Each time I have gotten the Service AH/TC/ABS messages, they go away when the ignition is cycled. No SES light and my basic scanner will not read them. I took it to Auto Zone but their scanner won't read it either.
Maybe I should take it to my tuner to get to the bottom of it with HP Tuners... Cleaned up all the wheel speed sensors this weekend and tightened up some connections to the frame and the trio of messages hasn't returned yet In 100 miles of driving but I'm not confident that will be a long term fix.
