Submariner1
Senior Member
- Joined
- Sep 3, 2016
- Messages
- 4,692
- Reaction score
- 788
- Location
- Windsor Berkshire
- Your Mercedes
- CL500 2009 5.5
Just spoke to the technician.
They found the fault, basically good news there was no evidence of the dreaded and fatal water damage.
They found a few blown transistors, and the black dust was intermitantly shorting out a couple of circuits (where the blown componets were). They are pretty confident it was down to this black dust.
He thought it was brake dust and or combustion fumes. And it was conductive!
He reckoned on very humid days it could possibly become more conductive, and hence the failure.
Is brake dust conductive? is there any metalic compound in tne brake pad? Or is it just micro metal filings from the disc? Who knows but it seems logical.
OK its still fingers crossed, as its on its final soak test before being certified as good to go!
(And he warned me if it failed they would have to do more work, because they give a lifetime warranty on the Amplifier )
For those interested 5 day turn around, and you can drive the car with the without it. Other than tons of stuff cant be accessed eg all the Comand related vehicle stuff, like convenience settings on mirrors seats, alarm. Only thing I really missed apart from the music was really the reversing camera.
Very happy bunny
Because £175 plus vat i.e £210 and £18 return carriage, is a huge reduction from £1,345 For a recon exchange MB unit.
In summary as long as you dont have water damage they can repair them.
Course I will repost once its installed.
They found the fault, basically good news there was no evidence of the dreaded and fatal water damage.
They found a few blown transistors, and the black dust was intermitantly shorting out a couple of circuits (where the blown componets were). They are pretty confident it was down to this black dust.
He thought it was brake dust and or combustion fumes. And it was conductive!
He reckoned on very humid days it could possibly become more conductive, and hence the failure.
Is brake dust conductive? is there any metalic compound in tne brake pad? Or is it just micro metal filings from the disc? Who knows but it seems logical.
OK its still fingers crossed, as its on its final soak test before being certified as good to go!
(And he warned me if it failed they would have to do more work, because they give a lifetime warranty on the Amplifier )
For those interested 5 day turn around, and you can drive the car with the without it. Other than tons of stuff cant be accessed eg all the Comand related vehicle stuff, like convenience settings on mirrors seats, alarm. Only thing I really missed apart from the music was really the reversing camera.
Very happy bunny
Because £175 plus vat i.e £210 and £18 return carriage, is a huge reduction from £1,345 For a recon exchange MB unit.
In summary as long as you dont have water damage they can repair them.
Course I will repost once its installed.