hi everybody

i have problem in my car

when i start engine bluetooth connection with my phone auttomaticly

i open radio to leson some music

then some time my friend call me

auttomaticly radio off and i answer the call

finaly when i finshe the call radio start agine but with out sound

if i wante sound agine we must off the engin and start it agine

what you think the problem

There is a Technical Service Bulletin on this problem in the 2004 LX470: TSB Audio AU001-04.

"Some customers may experience the Mark Levinson Audio System remaining muted
after ending a phone call using the Bluetooth system. Improvements have been made to
the software inside the Mark Levinson amplifier to remedy this condition.

Applicable Warranty*:
This repair is covered under the Lexus Comprehensive Warranty. This warranty is in
effect for 48 months or 50,000 miles, whichever occurs first, from the vehicle’s
in-service date.
* Warranty application is limited to correction of a problem based upon a customer’s specific complaint."

I had the same problem. I found the TSB and the dealer replace the amplifier under warranty.

can you explan the tsb what meaning?

can you tell me where i founded the amplifier in the car ??

thanks soo mush

A Technical Service Bulletin (TSB) is issued by an automobile manufacturer when a specific problem on a vehicle has been identified. It provides the manufacturer's instructions on how to correct the problem.

I think the amplifier is under the front passenger seat. To fix the bluetooth phone connection problem the amplifier must be replaced with a newer one. You will have to take your vehicle to a Lexus or Toyota dealer/service center, give them the TSB number (AU001-04), and request that they replace the amplifier. However, it may no longer be covered under warranty.

I heard to your advise

today i go to sonds market in my country

i tell to Enginer about the problem he tell me this first time i heard about this problem

and icant do for you anything i tell him about you and about your problem and you fixed

by replaced a new amplifier he tell me he have used amplifier you wante to tray it

i tell him ok why not and he remove my amplifier and but his amplifier

but the problem not fixed

see my lexus space of America and i buy it from America

and i exported to U.A.E

you asked me why you not go to toyota delaer in my country?

i answer you ?? my dealer Does not accept any cars not gulf space

he tell us the american cars diffrent system about gulf space

and he dont have a computer system for american space

this resone Prevent me to go to the delaer