Lexia Questions...........

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Paul-R
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Post by Paul-R »

How many characters long is it? Is it a mix of letters and numbers?
As I get older I think a lot about the hereafter - I go into a room and then wonder what I'm here after.

Inside every old person is a young person wondering what the hell happened.

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boristhespie
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Post by boristhespie »

It's a key generator. You put in a four digit number and the computer number you get through set up and scooby doo.
C'est pas possible!
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Paul-R
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Post by Paul-R »

Ah, sorry. I thought you meant it was written on the CD!

I did wonder as I had heard that the code required depended on the parameters of the computer, amongst other things.
As I get older I think a lot about the hereafter - I go into a room and then wonder what I'm here after.

Inside every old person is a young person wondering what the hell happened.

"Trying is the first step towards failure" ~ Homer J Simpson​
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VertVega
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Post by VertVega »

Make a search in YouTube with words "Lexia3" or " Lexia3 installation" ... 8-)
You'll get a bunch of decent guides which shows the complete process.
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Geoff Lebowski
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Post by Geoff Lebowski »

Experiment with neighbours download failed (for a number of reasons). Paul pointed me in the direction of this which looks very tempting.

Supposing the worst and my BSI is completely corrupt, would THIS lexia enable me to restore it? My assumption is that all software be removed from the BSI and that I'd need to download new software (from CD supplied or internet????) and then upload this to BSI.

Am I close and is it possible by home mechanic with above kit?
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Post by The Birdman »

For what we are about to receive may we be truly thank full.

http://www.citroencodes.com" onclick="window.open(this.href);return false;

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Post by wheeler »

Geoff Lebowski wrote:Supposing the worst and my BSI is completely corrupt, would THIS lexia enable me to restore it? My assumption is that all software be removed from the BSI and that I'd need to download new software (from CD supplied or internet????) and then upload this to BSI.
If the BSI is completely corrupt then even a genuine dealer lexia is unlikley to restore it. The lexia can program a new BSI, change the configuration of it & update the software.
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Post by boristhespie »

Excuse my ignorance but what is the BSI? Is it the computer?

Is that possible to programme?
C'est pas possible!
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Post by Geoff Lebowski »

BSI = Body System Interface (i think). It's the mother of all the other ECUs and controls a LOT of functions.

Wheeler - how do you get the software? Suppose then the BSI was knackered and I bought a new one and tried to install via my own lexia - what would be the process?

Thanks birdman - very tempted and at £30 delivery it's still cheaper than the UK one! Would it be best to buy closer to home though in case of problems?
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Post by addo »

From memory you can order a preconfigured BSI for many cars - not sure if it needs any further "bedding in".
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Post by wheeler »

The BSI is the Built-in Systems Interface. Its a glorified fuse & relay box come ECU. It' the gateway between the 4 multiplexed networks & allows them to 'speak' to each other. Depending on the car It also directly controls some of the functions directly such as central locking, interior and some exterior lighting, wipers & power save mode. It is also half of the imodiliser system which is where all the security & coding comes in.
Geoff Lebowski wrote:Wheeler - how do you get the software? Suppose then the BSI was knackered and I bought a new one and tried to install via my own lexia - what would be the process?
The ideal process would be to print off the entire configuration of the original BSI, remove it & fit the new one then configure it through the Learning function in the BSI menu on Lexia. You need the cars transponder security code to do this as you will have to match it to the ECU then re code your keys.
In the real world though sometimes when a BSI is knackered it wont comunicate with the Lexia so you cant see original configuration. in this case you have to fit the new BSI & go through the configuration one by one & set each option correctly. this can take a while as there are a lot of options.
With that in mind if you have a lexia its always a good idea to do a print off of the BSI configuration while it's working & theres no problem with it incase you need it in the future.
Its not a problem for dealers as they can automatically configure them via the internet from the VIN.
The latest software version for updating the BSI should be on the instalation disc tha came with your lexia.

Addo- the configured to VIN BSI's are nonsence, if you go through the configuration you alway find they are wrong, it's just meant to be the configuration anyway not the security code so you still need a Lexia anyway to code the security code & program the keys.
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Post by addo »

Thanks for clearing that up on the preconfigured BSI units.

Given your exposure to the items generally, how common are internal faults that you feel are not readily repairable? I pose this question in light of the aspect of things that may be practically repaired but would then fall outside any dealer or workshop warranty...
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Post by wheeler »

Believe it or not & contrary to popular belief BSI failures are actually very rare although any sign of a weird electrical fault it's usually the first thing to get the blame which can be an expensive guess.
The biggest reasons for BSI's to fail are water ingress, incorectly fitting or using the wrong type of electrical accesories, not following correct diagnostic & repair proceures (eg using power probes where you should'nt be, incorect jump starting & not powering the system down properly). All of these are external problems & no fault of the BSI.
Like any other electronic componant they can fail though, There are several relays inside them that are no different to normal relays apart from that they are soldered to the board. these can fail but could easily be replaced/repaied by someone with the right gear & soldering skills.
To be fair, most vehicle techs are not electronics engineers so something like this would just be a failed BSI & needs replaced, in reality though i may be repairable with a £3 relay from maplins, a bit like the same scenario with the xantia heater blower transistors.
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Post by addo »

This is quite interesting - thanks!

Unfortunately I know quite a few of the "specialists" here would still reject your knowledge (at the customer's expense, too). :? I refused to work further on one car after the official mechanic (who had called me out to Lexiate it) did not follow my suggestions for testing away from the diagnostic port, before calling again.
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Paul-R
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Location: Wirral, NW England; Vaucluse 84, France
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2013 2.0 HDi 163 C5 Exclusive Tourer
2003 2.0 HDi 110 C5 Exclusive Estate (Gone)
2001 2.0 HDi 90 Xsara Estate (Gone)
x 1369

Post by Paul-R »

Boris

You have a PM from me.
As I get older I think a lot about the hereafter - I go into a room and then wonder what I'm here after.

Inside every old person is a young person wondering what the hell happened.

"Trying is the first step towards failure" ~ Homer J Simpson​
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