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Hi all,

Now using the 6 as a daily driver, the battery light and voltage drop (as shown in the pic) issue is seen while driving.
I thought it was because of a bad battery and replaced that some years ago, but now the car isnt connected to the battery charger/conditioner at night, it looks like the Alternator is the culprit.

Will have a look to take it out and see if i can just replace some bits and pecies or order a New one....

You can buy a voltage regulator which includes the brushes. Don't forget to check the connections on the bulkhead under the expansion tank.

Do you have a pic from that connection?

Rule 42: confirmed.

This is the fuse:

viewtopic.php?f=2&t=108097&p=652713&hilit=200A#p652713

But it's unlikely to be that in your case because your car has been garaged for years, hasn't it?

Most likely the regulator.

Part number: 077 903 803A

Equivalents:

Beru 0190005093 or GER 093 http://www.topersatzteile.de/motoroel/beru/7020835
BOSCH: F 00M 144 138 or F 00M 145 247 or F 00M 145 357

/actually that link will give you a load of other equivalencies.

Don't think the RS6 alternator has a viscous pulley does it? I replaced an alternator on a Golf 4 recently where the viscous pulley had hari-kari'd. The rest of the alternator was fine.

Normal pulley on ours, you unhelpful jerk.

chunky79 wrote:Normal pulley on ours, you unhelpful jerk.

lol'd.

http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... 1338499876

I bought this regulator - it was a genuine bosch part.

Thanks guys for the info.
How do i loosen the tension on the belt? Think somewhere above the alternator, easy accessible?

The tensioner is spring loaded, kinda middle of the engine. Have a look at the cambelt guide. Big spanner and twist it then pop the belt off.

Nobby wrote:The tensioner is spring loaded, kinda middle of the engine. Have a look at the cambelt guide. Big spanner and twist it then pop the belt off.

This.

It's not too bad to do, just awkward.

Which kind of hex bits do i need, in mm?

Yeh, in RS6 terms, it's an easy job.

chunky79 wrote:

Nobby wrote:The tensioner is spring loaded, kinda middle of the engine. Have a look at the cambelt guide. Big spanner and twist it then pop the belt off.

It's not too bad to do, just awkward.

MattV8 wrote:Yeh, in RS6 terms, it's an easy job.

chunky79 wrote:

Nobby wrote:The tensioner is spring loaded, kinda middle of the engine. Have a look at the cambelt guide. Big spanner and twist it then pop the belt off.

It's not too bad to do, just awkward.

Easy as in you get too leave the engine in the car for once