No sound and volume control on multimedia and steering wheel not working.

[mohsinb]

Hi,

 

I have a Lexus IS300H, with the premium nav system. It is a 2014 model. My issue is since couple  days no sound comes out of my system and I can’t control the volume with the dial or control on the steering wheel. If I do a rest of the system it comes on for 30 secs and goes off again. All other buttons works and control for even changing source.  I know it’s not the amplifier as you would still have control of the volume, this seems like a software issue.

I think I am on an old software please can someone let me know if they have had this issue I don’t really want to take it to Lexus for diagnosis of £190 per hour. 
 

I have attached pics of the software version please can you let me know if this is an old version.

 

[Andrew888]

Tried a "soft" reboot? like press the power button for 10 secs?

 

[mohsinb]

Yes I tried that it works for a minute and then does the same. Strange but I think the software version is corrupt or needs updating, not sure if I’m on the latest software version for my car.

[matt8]

Firmware is updated with the maps, but maps cost a few quid, and if you don't use the maps, then why update?

A little while ago, someone came up with a solution here. They extracted the firmware from a recent set of maps. Your firmware is rather old.

See here for the update: https://www.lexusownersclub.co.uk/forum/topic/108014-new-firmware-may-2016/?do=findComment&comment=1048030

[mohsinb]

Thank you Matt is this the version you are using? 
Before I update can I confirm this is the right version for the premium nav with the pioneer system.

[mohsinb]

Hi Matt did the update it does the below 3 times copying program data to nav system 

[mohsinb]

I then get the below program loading error. And wants to restart process done this 3 times no joy. Usb is fat3w with only those 2 files.

Any ideas ? 

[matt8]

2 hours ago, mohsinb said:

I then get the below program loading error. And wants to restart process done this 3 times no joy. Usb is fat3w with only those 2 files.

Any ideas ? 

Try a different USB stick. The formatting is right, but some just don't play ball. The car is very particular it would seem.

[mohsinb]

Also I did a check and it’s showing below next to the AMP

 

 

[mohsinb]

Does this mean amp faulty? I am reluctant to take to Lexus to have a look at this. 

[200h]

contact this company as they will be able to give you some advice

and they can repair lexus amplifiers aswell

https://svtservices.co.uk/lexus-mark-levinson-power-amp-repair-service/

[mohsinb]

Thanks 200h