No speedo no radio

[Samilton]

Hi there I have a 2014 Subaru legacy, awhile back the speedometer started going up and down regardless of speed, at this time the radios volume would also increase and decrease. I put a new vss, the top and bottom one. Didn't changing anything and now the radio doesn't work at all as well as the speedometer. I hooked my obd2 reader up and it is getting input from the vss.... any ideas why both would go out? Checked fuses already.

 

 

- no check engine lights

-tmps light on because of aftermarket wheels

-Harmon kardan radio/nav has power no audio

- speedometer doesn't work, but vss is picking up speed

Edited May 11, 2020 by Samilton

[Brunzo]

Check your audio has automatic volume (it depends on driving speed) and switch it off in menu (AVL or something). If you cant find this menu - try to disconnect CAN bus wires from radio and check how it behaivs. If the audio gets working back to normal then it seems like the vss sensor singal is not read correctly by ECU.