SYSTEM DIAGRAM
w/ Manual (SOS) Switch
w/o Manual (SOS) Switch
for 9 Speakers
for 12 Speakers 
Parts Location
System DescriptionLexus RX (RX 350L, RX450h) 2016-2026 Owners Manual > Rear seats: Second-row seats (RX450h)
Manual seat
Seatback angle adjustment lever
Seat position adjustment lever
Power seat
Seatback angle adjustment switch
Seat position adjustment lever
Second-row seats (RX450hL)
Seatback angle adjustment lever
Seat position adjustment lever
Seatback folding lever
Th ...
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Smart Access System With Push-button Start (for Start Function): Ignition Hold Monitor Malfunction (B2271)
DESCRIPTION This DTC is stored when a malfunction in the IG circuit or IG hold circuit of the certification ECU (smart key ECU assembly) is detected. DTC No. Detection Item DTC Detection Condition Trouble Area Note B2271 Ignition Hold Monitor Malfunction When either of the followi ...