Coding replacement RT3 - cant find ECU in lexia

This is the RT3 unit and was made by Magneti Marelli
The RT3 was available in a few different hardware versions, the later ones supporting MP3 playback. These units had an optical connection to the Display Screen.

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Re: Coding replacement RT3 - cant find ECU in lexia

Post by GiveMeABreak »

I need to see the full text as unfortunately, these early systems do not have full config data, but please see my edit to my last post, as I added a few questions on.
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Re: Coding replacement RT3 - cant find ECU in lexia

Post by Harlequin »

Its an RT3 with MP3 function to give it the proper name (HDD etc) . Yes its properly wired up inc the dev cable. It was working till i switched something off (and yes ofc, you warned me). I`ll go take a new photo
Simon
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Re: Coding replacement RT3 - cant find ECU in lexia

Post by GiveMeABreak »

RT3 or RT4 Simon? The thread says RT4, but the wiring and connections, therefore settings are different.

So it was working ok, then you took a flight of fancy and decided to change something that you can't remember and it's now gone toes up - does that sum it up? :-D
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Re: Coding replacement RT3 - cant find ECU in lexia

Post by Harlequin »

Almost - it was working in another vehicle, went to put it in mine - again screen was working, went to code it in , changed something and its gone toes up - utterly my fault i know.
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Re: Coding replacement RT3 - cant find ECU in lexia

Post by Harlequin »

which does mean a little forum trickery to move this to RT3 forum and title change ;)
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Re: Coding replacement RT3 - cant find ECU in lexia

Post by GiveMeABreak »

I'll sort that as it's confused me coming back to the topic Simon and I'm looking at the wrong resources.
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Re: Coding replacement RT3 - cant find ECU in lexia

Post by Harlequin »

Its me, i will admit i was wrong (and stubbornly so), i was convinced its an RT4 , and it isnt. So Marc i apologise for that.

Its a RT3 with HDD and MP3 ability.
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Re: Coding replacement RT3 - cant find ECU in lexia

Post by GiveMeABreak »

Ok, no worries all sorted now, but what I need is a page by page screenshot of the current configuration pages of the RT3, so I can see the option and the setting.
Also, please confirm you have the Colour version and not the monochrome version of the RT3.
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Re: Coding replacement RT3 - cant find ECU in lexia

Post by Harlequin »

Its colour, software version is 6.63 . Taking photos shortly in diabox
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Re: Coding replacement RT3 - cant find ECU in lexia

Post by Harlequin »

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Simon
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Re: Coding replacement RT3 - cant find ECU in lexia

Post by GiveMeABreak »

Ok leave it with me while I go and get a G&T for this one.
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Re: Coding replacement RT3 - cant find ECU in lexia

Post by GiveMeABreak »

Screen one. Should not have hands free kit with telematics unit.
Screen 2 RADIO - this should be set to absent with a telematics unit IIRC. This should only be active for standard RD4 radios.
Screen 9 - Deflation Detection should be present for your 3.0 litre.
Parking assistance should be active Front & Rear.
Aux Video input - suspect this should be missing.
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Re: Coding replacement RT3 - cant find ECU in lexia

Post by Harlequin »

no deflation - 3 of the 4 sensors went bad so i had them all removed, yes i can put new ones.

radio now remvoed , hands free now removed

parking assist has dodgy wiring at the front somewhere i think, so doesnt work anyway

aux input now off
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Re: Coding replacement RT3 - cant find ECU in lexia

Post by Harlequin »

Holy Thread resurrection - as a final note, sent bsi/ecu and keys off to be reflashed and paired to a chap in wales and voila, solved the problem. Lesson learnt
Simon
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