Lexia enable ECU TMPS

This is the Forum for all your Citroen Technical Questions, Problems or Advice.
Spix
Posts: 20
Joined: 07 Dec 2025, 12:13
x 2

Lexia enable ECU TMPS

Unread post by Spix »

Hello i need an help.
I have lexia and 9.186 program version.

Several months ago, I disabled the Tire Pressure Monitoring System (TPMS) ECU module because one of my sensors was faulty.
I have now fixed/replaced the sensors and am attempting to re-enable the module and perform the sensor acquisition/learning procedure, but I am encountering an issue.
I am unable to successfully enable the sensors. I'm attaching a few screenshots of the process (which I can't include here, but they show the steps).
The strange thing is that when I try to start the acquisition, the procedure first instructs me to switch the ignition OFF. Then, it asks me to start the engine. As soon as I start the engine, the connection seems to be immediately reset/lost.
Could you please help me? Am I performing the procedure incorrectly, or would it be better to try downloading an older version of the software?
Attachments
IMG-20251206-WA0011.jpeg
IMG-20251206-WA0009.jpeg
IMG-20251206-WA0007.jpeg
IMG-20251207-WA0000.jpeg
IMG-20251206-WA0013.jpeg
IMG-20251207-WA0008.jpeg
IMG-20251207-WA0010.jpeg
IMG-20251207-WA0012.jpeg
wheeler
Posts: 7926
Joined: 21 Sep 2002, 19:07
x 1056

Re: Lexia enable ECU TMPS

Unread post by wheeler »

Have you actually re enabled it?
You may need an 'exciter' to wake the sensors up.
Online
Kees
Donor 2024
Posts: 585
Joined: 16 Nov 2021, 16:16
x 146

Re: Lexia enable ECU TMPS

Unread post by Kees »

Just enter the oke key without switching of the engine and also when it says, start again.
Spix
Posts: 20
Joined: 07 Dec 2025, 12:13
x 2

Re: Lexia enable ECU TMPS

Unread post by Spix »

When i start again ask me to put key in ignition off.
I have look a video on YouTube and during diagnosis general at the end ECU module is deflation tyre, I don't have more this.

Where is menu for enable ECU module?
Spix
Posts: 20
Joined: 07 Dec 2025, 12:13
x 2

Re: Lexia enable ECU TMPS

Unread post by Spix »

I have checked with old screenshots, and i confirm that learn procedure for tmps working.

Why is there a reset of communication
Spix
Posts: 20
Joined: 07 Dec 2025, 12:13
x 2

Re: Lexia enable ECU TMPS

Unread post by Spix »

Can anyone check if id tyre sensor are numbers or only 0
Spix
Posts: 20
Joined: 07 Dec 2025, 12:13
x 2

Re: Lexia enable ECU TMPS

Unread post by Spix »

Update:
Add id sensors and now it's work.
In fact at the begin i have a real low pressure, after i have no alarm.
But the procedure for learning sensors go in error for engine power on. Any advice?
Other question, is there a system for look pressure of tyres on car display?
Spix
Posts: 20
Joined: 07 Dec 2025, 12:13
x 2

Re: Lexia enable ECU TMPS

Unread post by Spix »

Is there a way to display real-time tire pressure on the dashboard, or does the control unit only send a notification when a tire is flat?
Spix
Posts: 20
Joined: 07 Dec 2025, 12:13
x 2

Re: Lexia enable ECU TMPS

Unread post by Spix »

About the option inside autodiag, filter for deflation detection, what's the difference between normal and selective filtering ?
Spix
Posts: 20
Joined: 07 Dec 2025, 12:13
x 2

Re: Lexia enable ECU TMPS

Unread post by Spix »

Image attached
Attachments
IMG-20260117-WA0000.jpeg
IMG-20260117-WA0002.jpeg
wurlycorner
Donor 2024
Posts: 2177
Joined: 30 Oct 2012, 22:37
x 271

Re: Lexia enable ECU TMPS

Unread post by wurlycorner »

Spix wrote: 09 Jan 2026, 19:39 Is there a way to display real-time tire pressure on the dashboard, or does the control unit only send a notification when a tire is flat?
I believe it only provides warnings, not live display of pressure (frustrating considering the ECU does have that data - the X7 is the same).

Sorry not able to help on the other queries.
--
Iain

'85 CX GTi Turbo s1 (met. blue)
2x '85 CX GTi Turbo s2 t1 (met. silver & grey)
'88 CX GTi Turbo s2 T2 (met. light blue)
CX DTR T2 Safari (silver)
2x '96 Xantia Activa (Black & met. green)
'01 C5 2.0 HDi LX Estate (Blue)
'11 C5 X7 3.0 V6 Exclusive Tourer
Spix
Posts: 20
Joined: 07 Dec 2025, 12:13
x 2

Re: Lexia enable ECU TMPS

Unread post by Spix »

Thank you, very much!
Spix
Posts: 20
Joined: 07 Dec 2025, 12:13
x 2

Re: Lexia enable ECU TMPS

Unread post by Spix »

wurlycorner wrote: 21 Feb 2026, 13:27
Spix wrote: 09 Jan 2026, 19:39 Is there a way to display real-time tire pressure on the dashboard, or does the control unit only send a notification when a tire is flat?
I believe it only provides warnings, not live display of pressure (frustrating considering the ECU does have that data - the X7 is the same).

Sorry not able to help on the other queries.
Thank you very much!