TCU location

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bilko1
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TCU location

Post by bilko1 » Tue Sep 08, 2015 8:05 pm

I'm getting a few TCU comms errors in the Engine ecu, ABS module and Instrument cluster so want to check the TCU for poor connections etc. Can someone tell me its location on a 2003 RHD please. I had the passenger side carpet up a year or so ago and remember seeing a box with a module inside but thought this was the convenience module.
Avus Avant, RNS-E mk2 with sds and Bluetooth, Milltek, Hotchkis, Bilstein, Forge, ITG, A.C.E, Wagner, FBMFSW, MTM.

launching_rs4
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Re: TCU location

Post by launching_rs4 » Tue Sep 08, 2015 8:46 pm

On my RHD RS6 its under the front carpet on the drivers side
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drybeer
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Re: TCU location

Post by drybeer » Tue Sep 08, 2015 9:19 pm

On RHD it's in the passenger's footwell area, and the unit under the passenger's seat is the convenience ECU IIRC.
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Shoppinit
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Re: TCU location

Post by Shoppinit » Tue Sep 08, 2015 9:34 pm

launching_rs4 wrote:On my RHD RS6 its under the front carpet on the drivers side
Your signature pic is a bit on the big side.
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."

bilko1
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Re: TCU location

Post by bilko1 » Wed Sep 09, 2015 8:14 am

God I'm still confused, Drybeer says it's on the passenger side and launching rs4 says it's on the drivers side. :bash: The only thing I know for sure is Bam hasn't got one on his Avant :)
Avus Avant, RNS-E mk2 with sds and Bluetooth, Milltek, Hotchkis, Bilstein, Forge, ITG, A.C.E, Wagner, FBMFSW, MTM.

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Re: TCU location

Post by Shoppinit » Wed Sep 09, 2015 8:39 am

Shoppinit wrote:Where is the TCU? Driver or passenger side?
Daveperc wrote:Passenger side - along with a variety of other systems - all designed to get wet!!

Dave
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."

bilko1
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Re: TCU location

Post by bilko1 » Wed Sep 09, 2015 8:44 am

Ok Shop, I trust you I'll take the passenger side apart. It's strange as I had the passenger side apart a few years ago when I had water coming in up the air con drain funnel. I found the black plastic box but only saw a convenience unit in it.
Avus Avant, RNS-E mk2 with sds and Bluetooth, Milltek, Hotchkis, Bilstein, Forge, ITG, A.C.E, Wagner, FBMFSW, MTM.

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Shoppinit
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Re: TCU location

Post by Shoppinit » Wed Sep 09, 2015 8:46 am

Hmm... Found this:

Image

That looks more like convenience module...
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."

bilko1
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Re: TCU location

Post by bilko1 » Wed Sep 09, 2015 8:49 am

Yes that looks exactly like what I found under my carpet, the casing is plastic. Afaik the TCU has a metal / alloy casing
Avus Avant, RNS-E mk2 with sds and Bluetooth, Milltek, Hotchkis, Bilstein, Forge, ITG, A.C.E, Wagner, FBMFSW, MTM.

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Shoppinit
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Re: TCU location

Post by Shoppinit » Wed Sep 09, 2015 8:50 am

It does. But it's in a plastic box. Also is only has one large connector.

More info here...

http://www.vwaudiforum.co.uk/forum/show ... post725998
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."

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Shoppinit
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Re: TCU location

Post by Shoppinit » Wed Sep 09, 2015 8:51 am

Looks like this:

Image
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."

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Re: TCU location

Post by gmac78 » Wed Sep 09, 2015 9:16 am

Defo under UK drivers side front carpet in a black plastic box. Had mine out last year when sending to Viper.

launching_rs4
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Re: TCU location

Post by launching_rs4 » Wed Sep 09, 2015 9:50 am

Its definitely under the drivers side front carpet, I had to go in there to confirm I had a MTM TCU. The TCU is a metal case like the ECU but it's enclosed in a plastic box, have to pop that open first to access it. The convenience/comfort unit is under the carpet on the front passenger side.

This is a RHD vehicle and I'm in Australia :)
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bilko1
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Re: TCU location

Post by bilko1 » Wed Sep 09, 2015 4:34 pm

Bet that cost a small fortune in Australia.
Avus Avant, RNS-E mk2 with sds and Bluetooth, Milltek, Hotchkis, Bilstein, Forge, ITG, A.C.E, Wagner, FBMFSW, MTM.

bilko1
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Re: TCU location

Post by bilko1 » Thu Sep 17, 2015 1:30 pm

Finally got round to looking for the TCU, found it under the drivers side carpet :)
Image
Image
Avus Avant, RNS-E mk2 with sds and Bluetooth, Milltek, Hotchkis, Bilstein, Forge, ITG, A.C.E, Wagner, FBMFSW, MTM.

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