Where is the TCU located?

Tiny
DIVIDES
  • MEMBER
  • 2009 AUDI S8
  • V10
  • 4WD
  • AUTOMATIC
  • 105,000 MILES
If you can tell me where the TCU is located please.
Monday, September 6th, 2021 AT 7:53 AM

4 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,716 POSTS
Hi,

Are you referring to the Mechatronics control unit? That is what controls the transmission. If that is correct, it is located in the transmission (valve body).

See pic 1 below. I highlighted the control unit.

Let me know if that helps.

Joe

See pic below.
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Monday, September 6th, 2021 AT 7:22 PM
Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
When you say TCU, I assume you mean the transmission control unit? If so, they call this a TCM which is actually the mechatronic unit which is basically the valve body inside the oil pan.

I am attaching the info below on this unit so please take a look at it and let me know if you have questions on this.

Thanks
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Monday, September 6th, 2021 AT 7:23 PM
Tiny
DIVIDES
  • MEMBER
  • 898 POSTS
Thanks to you both. So this car has no external TCM just like an ECU to the motor?
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Monday, September 6th, 2021 AT 7:48 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,716 POSTS
Hi,

That is correct. The module is the mechatronic unit. By the way, great car!

Joe
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Monday, September 6th, 2021 AT 9:19 PM

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