Parasitic drain in ‘08 400H

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Mar 10, 2026 | 01:35 PM

#16

Radojko

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Joined: Apr 2025

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Quote:

Originally Posted by MarkPoe

Where exactly did you find this?

Behind the radio.

Mar 10, 2026 | 06:10 PM

#17

MarkPoe

5th Gear

Joined: Feb 2026

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Quote:

Originally Posted by Radojko

Behind the radio.

Did you remove just the BT box or the radio too?

Mar 10, 2026 | 06:58 PM

#18

Radojko

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Quote:

Originally Posted by MarkPoe

Did you remove just the BT box or the radio too?

I had to remove the radio to reveal the BT and SoundLinQ boxes, which ultimately turned out to be the source of the parasitic drain that that had been killing my battery.

Mar 10, 2026 | 07:50 PM

#19

LeX2K

Lexus Fanatic

Joined: Sep 2010

Posts: 25,973

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From: Alberta

Quote:

Originally Posted by Radojko

Not sure if I want to potentially subject myself to another adventure in electrical troubleshooting, but… Is there a preferred current product for adding BT streaming to this generation of RX with navigation? Simple, reliable, and easily installed? Not interested in the cost and complexity of adding CarPlay. Just BT support.

Look into GROM adapters.