Hello Guys!!

Since couple of days ago there was an ABS, VSC, PCS and brake system check warning lamp start flashing on my dash. When I go to the local workshop yesterday they diagnosis my car system and the error code (C1391 Abnormal leak in accumulator) message appear and they are asking to replace both ABS accumulator and actuator. I'm wondering if I could replace only the faulty part (probably accumulator). Is it possible or not. Does anyone had a same problems before?? My car is LS460 2007 (JDM Model).