Awakened 4 wks ago by 2001 4runner making clanking sound & woundn't start. Replaced starter relay and junction block. Now ABS,TRAC,VSC, and air bag lights are all on! Told the Junction block damage caused problems with the air bag center unit and communication with ECM impossible. Other lights on due to "computer malfunction". "Could be more", but recommended "center airbag unit 89170-35120 @ $329.40, and ABS Computer 89540-35260 @ $1381.75. Is there any way around this, or used parts, or something?