Where in the quattroporte is the TPMS ECU

[Phil the Brit]

A fault code reader has detected that a fault is the TPMS ECU. I am trying to locate this ECU in the car. I have looked under the floor of both the drivers and the passenger side and found an ECU under each panel but they are not the TPMS ECU.
By going on to Eurospares website and searching for part number 235303 (the TPMS ECU) the diagram seems to point to under the floor though.
Can anyone verify where this actually is please?
Thanks in advance

 

[Wanderer]

It's under the drivers footwell, underneath another ECU (the proxi one I think), you have to remove that whole bracket assembly and it's there underneath. Secured by two copper bolts, one easy to get off, the other practically inaccessible - need nimble fingers and some sort of small jointed ratchet set.

I was just too fat fingered, I let the garage do it and my new ECU lasted about 9 months, cold weather killed it.

 

[MC_Bob]

Its like an inception of ECUS. Just keep removing them until you find it.

 

[Phil the Brit]

It's under the drivers footwell, underneath another ECU (the proxi one I think), you have to remove that whole bracket assembly and it's there underneath. Secured by two copper bolts, one easy to get off, the other practically inaccessible - need nimble fingers and some sort of small jointed ratchet set.

I was just too fat fingered, I let the garage do it and my new ECU lasted about 9 months, cold weather killed it.

Looked there and dismissed it. Oh well, I'll look again now. Those four plastic screws for the carpet panel are hard to get off, ended up drilling them out. is that how you did it?

 

[Wanderer]

Looked there and dismissed it. Oh well, I'll look again now. Those four plastic screws for the carpet panel are hard to get off, ended up drilling them out. is that how you did it?

The little rectangular cover under the carpet? They were metal screws on mine and came out easily.

 

[Phil the Brit]

Definately plastic on mine, posidrive heads which just kept turning. When I examined them after getting them out there was no thread just grooves. One time use type!