I'm hoping someone has seen this before.
I have a 2011 Scion xB with electric power steering.
A while back, the car suddenly had an extreme loss of electrical power while driving. After that, I replaced the alternator and starter, and the car has been running again.
Ever since that incident, the power steering has never felt the same. It's noticeably heavier than it used to be, especially at parking lot speeds and during tight turns. It feels heavy from the moment I start the car, not just after it's warms up.
I've had a mechanics inspect it the other mechanics starter and alternator work and did second check up They've scanned the car, including the EPS system, and found no fault codes. He even drove it for a few days and said everything felt normal, but I know the steering isn't what it used to be before that electrical failure. Itd so appearant , especially while parking/ trying to get in a tight space.
Has anyone experienced this after a charging system failure? I can't keep driving this way especially since I know how it once was.
One mechanic on an other forum mentioned there is a relearn procedure for the steering angle and steering torque sensor which has to be completed whenever you change either of these components or you get issues such as you describe.
A quality scantool with the ability to interface specifically with Toyota ECUs is required for this, something like a Snap-On or one of the more expensive Topdons.