Quote:
Originally Posted by ogakor
The temperature hit 4 below this morning at Lake Tahoe. When I started my '05 FEH, the ABS and brake warning lights came on, along with a message to "check brake system." To make a long story short, apparantly the regenerative braking system was not working. The hybrid power display showed no green arrows flowing to the battery when brakes were applied, although I could stop. I drove about six miles with this condition, then parked in the sun. Three hours later, with the temperature in the mid 20's, I restarted the vehicle. All systems were normal. The power display showed a flow to the battery while braking. Has anyone else had this problem, and what is there about the braking system that could cause a temporary failure of regenerative braking in very cold weather? Thanks for your help.
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My two cents is that the brakes lost its calibration. This happens when you disconect the 12V battery, or you have a computer glitch. The "check brake system" light would have stayed on till you did a reset by turning off the ignition switch for a few seconds and turning it back on. Since you continued to drive and not reset the system, the brake system remained in the protective mode.
Anytime you get a trouble light, you should try resetting things by a reboot of the computers. In addition, to recalibrate the brakes, leave the eCVT in "Park" and press the brake pedal all the way down till it stops travel. Let off and the computer will calibrate back to the original setting. If you still have a warning light, reboot by turning off the key and restart.
GaryG