ECU replacement cost?

[minniemousey]

So before I tackle the stat problem another one has cropped up...

Flashing glow plugs and "Engine Workshop!" error on dash this morning. Engine turns over but won't start. Call the RACV - no fault codes pop up on the VAGCOM. After checking the fuse boxes - fuses SC26 and SC33 also blown.

Looks like it is a failed ECU which is apparently a common failing part for the 2.5TDI. Prior to this, it had been intermittently difficult to start and had other intermittent issues with the central locking which is also an indicator of the above.

My question - has anyone had to replace/repair the ECU and approx how much was it?

[Brientim]

I can't not answer the specific questions but I would contact and ask them.

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[Umai Naa!!]

Have a look under the passenger's seat at the multifunction connectors, and see if there's anything foreign in the spare plugs.

All of them are pretty much live, and some of them are inputs and outputs to/from the ECU.

[Umai Naa!!]

I can't not answer the specific questions but I would contact and ask them.

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ECU - Engine Control Unit, in this case.

[Lucas_R]

ECU replacement cost?

Not the same car, but this might give you an indication of cost - my friend had to replace the ECU in his VW Golf Mk5 GTI and it was about $3,500 all up.

The ECU itself was around $2,200 and the rest was 'labour charges'.

[minniemousey]

I looked under both front seats. Only a bit of dust and dog hair which i vacuumed up. Still no joy.... and now the van is locking itself sometimes but not all the time.

[minniemousey]

Does anybody know if you can remap the ECU while its faulty? I am thinking of asking one of those performance tuning places. They claim they can give you more power and make it more economical at the same time

[Umai Naa!!]

I looked under both front seats. Only a bit of dust and dog hair which i vacuumed up. Still no joy.... and now the van is locking itself sometimes but not all the time.

I don't think it's an ECU fault.

I'd be looking at an electrical fault.

[minniemousey]

The van has been hard to start sometimes, it does nothing when you turn the key. Then after between 2 & 6 times it starts. The central locking doesn't always work as it should. Sometimes 1 or the other sliding door won't unlock/lock. Internal lights sometimes turn off/on randomly. The 2 blown fuses noticed today, no 26 & 33 in the bottom panel under bottle holder. Nothing else seemed to be not working with the blown fuses and i'm not sure what fuse card to go by to tell me what they are. 1 card says 26 is a low beam & 33 is radio, radio was definitely working.The other "option" card 26 has a T & a symbol of 12v inside a rectangle and circle and 33 has a T. This van is very frustrating, when it's good, it's great & when it's not it's expensive....

[h100vw]

I don't think it's an ECU fault.

I'd be looking at an electrical fault.

If the engine runs ever, I don't really see the ECU being a problem.

[minniemousey]

The van hasn't started/run since the glow plug light has started flashing. I've been looking on a couple of UK forums as well which is where I have got the ECU idea from. Does anybody have any idea which part of the electrical system to start looking at? RACV guy says there is no power at the glow plugs.....

[h100vw]

The van hasn't started/run since the glow plug light has started flashing. I've been looking on a couple of UK forums as well which is where I have got the ECU idea from. Does anybody have any idea which part of the electrical system to start looking at? RACV guy says there is no power at the glow plugs.....

Go to erwin and pay 7 euros for the diagrams. No one can reliably troubleshoot this without them. Might be a fuse gone. You'd be pretty pissed if that was the case.

You can't load software to dead ECUs

[aprr32]

Changed a few igition switch contact assemblies in the last couple of years, vehicle does some pretty strange things electrically when they play up.

[Sunny43.5]

With the central locking I would check the connectors under the drivers seat unplug and check all of them , on both ours the connectors were growing their own green foliage around them . You can buy contact cleaner from Jay Car two parts , a cleaner which you need to leave on for 24 hours then a gold plating spray which then coats and protects the pins etc. What is confusing is how inside the van under the seat it can generate growth , I would expect it on external ones .

[minniemousey]

Well the jury's still out about this one....currently parked up at the workshop with the diagnosis of a faulty crankshaft position sensor. The only matching symptom of this was the failure to start - no shuddering whilst driving or misfiring/backfiring or stalling. A new one was supposed to have been fitted by COB today. My guess is the sensor has been replaced and it's still not starting....