gearbox limp home is back even with change of battery.

[brad190]

Have a look at this link Malc.
The Black module I pull out states EGS on the sticker is this the right one?
I ask as the second from the windscreen has as 5 plugs on it ?

http://uk.youtube.com/watch?v=nt8KR3SwEzQ

Thanks again.

 

[television]

I will post back in a few mins

 

[brad190]

Ok, cheers.

 

[television]

2 papers Emailed to you, one clearly show what it is like

 

[brad190]

I would say its the one I pull out in the video as the pins are the same as your diagram.
Its not the second one from the windcreen as sam/unit said.
Right I will go clean it now.
Thanks for your help Malc.

 

[brad190]

Just cleaned all the connections put back together but its still the same...leave it running for 4/5 mins restart & its fine.
It was worth a try & I thank you very much.
Brad.

 

[television]

So sorry that did not work, it was a listed fault too.

Could it be the module its self, what are the chaces of borrowing one from a breaker.


That spoilt my week end

 

[brad190]

Thats ok Malc, its just my luck.
I only have a couple of breakers around here & there not up to much but I will give them a bell.
Its a really strange one as it ALWAYS ok when left to run.
If the problem is the gear selector or electric gearbox pack or module then why does it ALWAYS go away when left to tick over for 5 mins
Have a good afternoon mate.

 

[television]

The only way that these things can be tested is with a break out box, thats an extension plup and socket on a lead with access points so that test gear can be coupled up to the ECU.

Trouble is that the ECU does get warm, so expansion takes place on the joints inside, but the electo plate in the box would not be getting warm at all after 5 mins at idle, no electronic components behave like this and they are either faulty or OK, its always dry / bad joints that fail along with connecting plugs.

I am going to search some more forums around the world, to try an find anything on this

 

[brad190]

I see what you mean...so the ECU could be getting warm then the problem goes away.
Thanks very much again we all are very grateful
Good luck on your searching.

 

[television]

When I went out last night for a meal, this was going around in my head.

Then I started to think, the CAN BUS is connected to this, and in my experience of these things I have found that when a car is first started and there is a CAN fault, or something missing, the car will go on searching the whole time that you drive, and after 5 to 10 mins the CAN will find whats missing once that item is used, and hold that info until the next start or after some hours. The next day you can be back to square one where it starts all over again.

Could it be that the CAN connection on the engine ECU is failing, I am going to look further into these problems but it takes much time to examine all of the diagrams.

When a SAM failed on my car,it took 5 to 10 mins to find things like say Auto wipe or head lamps, if I turned the wipers or headlamps on, the car then new that it had them and the warning went away for that day, then back to square 1 the following day

 

[MB TECH WARRINGTON]

brad the fault codes in your car were identical to another customer of ours, same symptoms also. same car, same year.

we replaced the electric pack which cured the fault, this was id say 9 months ago, problem has not returned.

im convinced that the electrics pack will cure your fault also.

kind regards
shane,
mb tech

 

[television]

brad the fault codes in your car were identical to another customer of ours, same symptoms also. same car, same year.

we replaced the electric pack which cured the fault, this was id say 9 months ago, problem has not returned.

im convinced that the electrics pack will cure your fault also.

kind regards
shane,
mb tech

Yes the missing signal could just as well be in there as anywhere else

 

[brad190]

Hi Malcom & thank you,
my mrs says that its sweet of you to think about my problems while your out eating
The only thing that I use before selecting drive is the brake & when I then try to return to park it will only go as far as neutral, the only way to get reverse or park is to release the brake....could this be a clue or is this normal limp home mode?

Thanks for the reply MB TECH, I'm on short time at work at the moment so I need to either save up or sell
If I do repair it will come to your workshop!

Thanks loads

 

[television]

I have forgotten now did the brake lamp switch get changed ever

 

[brad190]

No never changed the barke light switch Malc.

 

[television]

No never changed the barke light switch Malc.

The brake light switch can kill the CAN signal though usually has other effects like killing the speed signal, though this can cause it, they cost £9 from MB and dead easy to fit, I would hate to be responsible if it did not cure it, it was just your post of when it does it

 

[brad190]

Where abouts is it please?

 

[television]

Where abouts is it please?

just above the brake pedal,,I wonder what would happen if you just disconnected it and tried the car

 

[brad190]

I can give it a try tommorrow & let you know ea.
I will let you know when I've tried disconnecting it.
We will keep our fingers crossed Malc.
Many thanks.