Hands Free Phone Mic - quality / performance / position, is unacceptable.

[tristand]

So how big a job is this? How easy is it to run the new cables in?

It's all pretty easy - i soldered the new cables in but you could crimp them. It would be a definite warranty issue though, you need to cut the loom in three places, including around the ecall unit. I routed them from the roof console down the driver's side A pillar and into the head unit.

 

[tristand]

Do you know where the head unit is ground to and do you have any pictures of the grounding point? I’m wondering if this can be improved rather than reroute the wire from outside the harness.

It has a chassis ground connection directly behind the head unit in the driver's side footwell. Unfortunately the issue isn't poor grounding, it is crosstalk between wires in the loom. At least it was on mine.

 

[Tom D]

It's all pretty easy - i soldered the new cables in but you could crimp them. It would be a definite warranty issue though, you need to cut the loom in three places, including around the ecall unit. I routed them from the roof console down the driver's side A pillar and into the head unit.

Would attaching some of those circular magnets around the cable make a difference?

 

[ryket]

I don't have the guts to do that while the car's under warranty, but great to know there's a fix.