electrical failure

4.2 V8 40v biturbo - 450 bhp
4.2 V8 40v biturbo - 480 bhp (plus)
Post Reply
saul
Neutral
Posts: 4
Joined: Thu Jun 24, 2010 1:36 am

electrical failure

Post by saul » Sun Sep 12, 2010 12:09 pm

Any ideas welcome...

I drove over a pothole today which wasn't the worst but still enough to make a bang, when i went down the pothole my 2003 C5 RS6 cut out as though the battery had been diconnected.

It has no life going to any part of it like hazards, interior light or electric seats and all the dials are frozen at the readings from when I was driving and it cut out. Except for the battery volts dial which reads zero.

The battery leads were on tight and the battery is in good condition, but there is no power going to the fuse box in the dash or the ecu under the bonnet.

I disconnected the battery for around 3 hours but this made no difference.

Any suggestions please?

User avatar
Shoppinit
Cruising
Posts: 20343
Joined: Wed Dec 31, 2008 6:24 pm

RE: electrical failure

Post by Shoppinit » Sun Sep 12, 2010 12:57 pm

How do you know your battery is in good condition? Have you checked it since this happened?

It does sound like something is stopping all juice getting to everywhere. There is a huge 200amp fuse in the engine bay somewhere near the windscreen I believe. Check that.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."

User avatar
ecain63
Top Gear
Posts: 2066
Joined: Sun Feb 08, 2009 7:28 pm
Location: Bournemouth

RE: electrical failure

Post by ecain63 » Sun Sep 12, 2010 6:23 pm

Has the alternator / aux belt come off its pulley?
Now Sold!

'03 Daytona Grey RS6 Avant.
Bilstein PSS9's - bloody amazing.
275 Vreds.
MRC custom map with TCU.
Miltek Resonated.
Hi Flow filters.
Piano inserts with natural leather.
19" 'Plus' (Grey) rims.
Pioneer Avic-D3 (to replace RNS-D) inc DVD, Nav, Ipod Movies, Bluetooth and much more.

saul
Neutral
Posts: 4
Joined: Thu Jun 24, 2010 1:36 am

RE: electrical failure

Post by saul » Mon Sep 13, 2010 12:22 am

It was in the 200amp area, the live feed from there to the ecu had corroded.

Thanks anyway people

Post Reply

Return to “RS6 / RS6 plus (C5 Typ 4B) 2002-2004”

Who is online

Users browsing this forum: No registered users and 369 guests