ABS accumulator issue

[Lexdawg]

I have a 2005 Lexus LX 470. Getting a beeping sound and ABS lights brake light on the dash when starting cold beeping eventually goes away and lights go off after it warms up. Took it to my local mechanic and he said the master cylinder and sensors and pistons were all functioning well but he said he didn’t know how to fix the problem without replacing the whole thing . Seems like a common problem with this year Land Cruiser and Lexus. Wondering if anybody has any solutions recommendations or repairs around the Atlanta area. Thanks

 

[TequilaMechanic]

Doesn’t sound good man. Techstream or other code reader needed to diagnose further.