Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Radio Broadcast cannot be Received or Poor Reception

CAUTION / NOTICE / HINT

NOTICE:

Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Navigation System.

Click here

PROCEDURE

(a) Check the radio automatic station search function.

(1) Check the radio automatic station search function by activating it.

B

REPLACE RADIO RECEIVER ASSEMBLY

A

(a) Check if any optional components that may decrease reception capacity, such as a sunshade film or a telephone antenna, are installed.

NOTICE:

Do not remove optional components without the permission of the customer.

B

REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTICE ABOVE)

A

(a) Preparation for check (1) Disconnect the antenna connector from the radio receiver assembly.

(b) Check for noise

(1) Turn the engine switch on (ACC) with the radio receiver assembly connector connected.

(2) Turn the radio on and tune into AM mode.

(3) Place a screwdriver, thin wire or other metal object on the radio receiver assembly antenna jack and check that noise can be heard from the speakers.

OK:

Noise can be heard from the speakers.

NG

REPLACE RADIO RECEIVER ASSEMBLY

OK

(a) Disconnect the RA radio receiver assembly connector.

(b) Measure the voltage according to the value(s) in the table below. Standard Voltage: Tester Connection Condition Specified Condition RA-5 (ANT+) - Body ground Engine switch on (ACC) Radio switch on and FM or AM selected 11 to 14 V

*a Component without harness connected (Radio Receiver Assembly)

NG

REPLACE RADIO RECEIVER ASSEMBLY

OK

(a) Replace the antenna cord sub-assembly with a new or known good one and check if radio broadcasts can be received normally.

w/ Rear No. 2 Seat: Click here

w/o Rear No. 2 Seat: Click here

OK:

Radio broadcasts can be received normally.

OK

END

NG

(a) Replace the No. 2 antenna cord sub-assembly with a new or known good one and check if radio broadcasts can be received normally.

w/ Rear No. 2 Seat: Click here

w/o Rear No. 2 Seat: Click here

OK:

Radio broadcasts can be received normally.

A

END

C

GO TO STEP 9

D

GO TO STEP 12

B

(a) Replace the No. 3 antenna cord sub-assembly with a new or known good one and check if radio broadcasts can be received normally.

Click here

OK:

Radio broadcasts can be received normally.

OK

END

NG

(a) Replace the rear spoiler sub-assembly with a new or known good one and check if radio broadcasts can be received normally.

Click here

OK:

Radio broadcasts can be received normally.

OK

END

NG

REPLACE RADIO RECEIVER ASSEMBLY

(a) Replace the No. 6 antenna cord sub-assembly with a new or known good one and check if radio broadcasts can be received normally.

Click here

OK:

Radio broadcasts can be received normally.

OK

END

NG

(a) Replace the No. 3 antenna cord sub-assembly with a new or known good one and check if radio broadcasts can be received normally.

Click here

OK:

Radio broadcasts can be received normally.

OK

END

NG

(a) Replace the rear spoiler sub-assembly with a new or known good one and check if radio broadcasts can be received normally.

Click here

OK:

Radio broadcasts can be received normally.

OK

END

NG

REPLACE RADIO RECEIVER ASSEMBLY

(a) Replace the No. 5 antenna cord sub-assembly with a new or known good one and check if radio broadcasts can be received normally.

Click here

OK:

Radio broadcasts can be received normally.

OK

END

NG

(a) Replace the No. 3 antenna cord sub-assembly with a new or known good one and check if radio broadcasts can be received normally.

Click here

OK:

Radio broadcasts can be received normally.

OK

END

NG

(a) Replace the rear spoiler sub-assembly with a new or known good one and check if radio broadcasts can be received normally.

Click here

OK:

Radio broadcasts can be received normally.

OK

END

NG

REPLACE RADIO RECEIVER ASSEMBLY