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General Problem with flashing mileage and Blue and Me steering wheel controls.

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General Problem with flashing mileage and Blue and Me steering wheel controls.

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dougl65

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Some of you may remember the problem on pick up I had with flashing mileage. It seemed to resolve and has now returned.

My windows and main phone control buttons on the wheel don't work and neither does the media player.

If I disconnect the battery everything works properly until the car is started, then I lose the windows and main controls on the steering wheel again.

Anyone got any ideas? Hopefully I'll get Fiat to look at it soon.
 
Well, this won't help - but I too am curious about the flashing mileage! Started flashing at 1044 but the next time I started her all was well again! Looked through all the books and couldn't find anything so am flummoxed - no problems with Blue & Me though.

Would be very interested to hear an explanation for the flashing!
 
Me too , milage started flashing on way home from work last night but this morning all was ok again ????:confused:
 
Needs proxy aligning at the dealer via the computer Its something to do with the dashboard not getting on well with the rest of the CAN network in the car. Its a common fault on the grande punto too..

https://www.fiatforum.com/grande-punto/142304-flashing-mileage.html

T14086 said:
imagine proxy alignment like the sychronisation of watches....all the modules on the control area network (CAN) must be at the 'correct time' to talk to each another correctly,the cluster is on this network.

check the 'body computer' software update has been done.
Click to expand...


hope that helps
 
Well proxy alignment at the dealer didn't sort it out. Works for a minute if you disconnect the battery then dies. Fiat Examiner says the communication nodes are refusing to talk to one another. Needs booked in and pulled apart to replace components to sort it out.
 
Last edited:
omg that is surreal, because mine started flashing last night aswell, and it has never done that before!

Its fine now
 
Does the unit need replacing? I believe he has already had a quick check behind the rear left panel to check the connector is secure.
 
Thanks to a forum member who explained to me what may be wrong, and I quote:

The convergence node is basically the blue and me system located in one of the rear quarters of the car. As you may know every node on the car talks to each other via the can network abs, dash pod, body computer, Blue and Me, climate control, engine ecu, radio, steering.

At both ends of the network, are the body computer and the dash these both have synchronised clocks in them to keep all network chatter in check . When these clocks are out of sync the dash notifies you and mechanics by flashing the mileage and clock.

A proxy alignment procedure simply realigns the clocks to make sure everything is working. If the clocks are not staying in sync it normally means the replacement of body computer and dash pod. But because everything is connected on the can network, other modules can start to interrupt things sending out random messages causing problems.This makes diagnosing such faults very difficult.

One thing your dealer can do is disconnect things from the network like B and M, abs, radio and climate control if fitted and then test the car and see if the faults are still present. If present, then the can net wires need to be tested from one end to the other, making sure there is no resistance in them. This can be done quite easily without stripping much of the car. They should start at the body computer and end at the dash and there are only two wires to check on the B-can network.

So far I have not seen nor heard of anything like this happening on the 500 or Panda.

I would say that, as your steering controls (which are directly connected to body computer) are not working, then there is a problem between the body computer and convergence system, so it may be bad connections or the convergence is faulty causing all the other problems.

The can net wires are not likely to be broken or damaged, as most of the body computer controlled things are working. For example, your windows lights and speedo etc are solely dependant on Can, so it has to be a problem with one of the nodes really.

If you can’t find out what's wrong, obviously Fiat wont allow a dealer to just order parts, without being able to determine the fault for definite. Don't worry, if this is the case Fiat will request a “flying doctor” to look at your car, so it will get fixed one way or another.

The B-can is designed in such a way that you can cut one of the wires and short one to earth or live, and it will still work, as the same signals are transmitted in a square wave pattern on both the wires. (One positive and one negative, both between 4 and 8 volts).

It's pretty bullet proof system really and usually extremely reliable.
 
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Fiat provide all the technical information/training to the tech to make accurate diagnosis.Only in certain circumstances are Fiat tech contacted & only in extreme circumstances are field engineers called out.
 
dougl65 said:
Thanks to a forum member who explained to me what may be wrong, and I quote:

The convergence node is basically the blue and me system located in one of the rear quarters of the car. As you may know every node on the car talks to each other via the can network abs, dash pod, body computer, Blue and Me, climate control, engine ecu, radio, steering.

At both ends of the network, are the body computer and the dash these both have synchronised clocks in them to keep all network chatter in check . When these clocks are out of sync the dash notifies you and mechanics by flashing the mileage and clock.

A proxy alignment procedure simply realigns the clocks to make sure everything is working. If the clocks are not staying in sync it normally means the replacement of body computer and dash pod. But because everything is connected on the can network, other modules can start to interrupt things sending out random messages causing problems.This makes diagnosing such faults very difficult.

One thing your dealer can do is disconnect things from the network like B and M, abs, radio and climate control if fitted and then test the car and see if the faults are still present. If present, then the can net wires need to be tested from one end to the other, making sure there is no resistance in them. This can be done quite easily without stripping much of the car. They should start at the body computer and end at the dash and there are only two wires to check on the B-can network.

So far I have not seen nor heard of anything like this happening on the 500 or Panda.

I would say that, as your steering controls (which are directly connected to body computer) are not working, then there is a problem between the body computer and convergence system, so it may be bad connections or the convergence is faulty causing all the other problems.

The can net wires are not likely to be broken or damaged, as most of the body computer controlled things are working. For example, your windows lights and speedo etc are solely dependant on Can, so it has to be a problem with one of the nodes really.

If you can’t find out what's wrong, obviously Fiat wont allow a dealer to just order parts, without being able to determine the fault for definite. Don't worry, if this is the case Fiat will request a “flying doctor” to look at your car, so it will get fixed one way or another.

The B-can is designed in such a way that you can cut one of the wires and short one to earth or live, and it will still work, as the same signals are transmitted in a square wave pattern on both the wires. (One positive and one negative, both between 4 and 8 volts).

It's pretty bullet proof system really and usually extremely reliable.
Click to expand...

This is a brilliant piece of info thanks to who ever it was who originally posted it...was it Littlepip? Anyway I'll memorise it and make sure I make those points to mu dealer if there is anything wrong with my B&M system, cos I know I'll be relying heavily on it.
 
T14086 said:
Fiat provide all the technical information/training to the tech to make accurate diagnosis.Only in certain circumstances are Fiat tech contacted & only in extreme circumstances are field engineers called out.
Click to expand...

My car is just back a day or so from the dealers (after being there 2 weeks)and a field engineer was called out to check why the gearbox (Dualogic) on my 500 wasn't changing properly. New ECU was ordered and apparently the new one was worse than the original. Got it back but whilst it's better I don't think it's perfect I really want to try another Fiat with dualogic to see what it's like.

To make matters worse the mileage was flashing this morning although a stop and restart sorted this out :rolleyes:
 
T14086 said:
rear seats need to be removed to access unit.
Click to expand...

This is interesting I folded the rear seats down for the first time to-day and it's only after putting them back in place that I got the flashing mileage for the first time. As I have said in a previous reply it took a stop and restart to get it to stop and it's been fine I'll keep an eye in it (n)
 
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