Sorry! I'm sure this has been covered many times but I can't find a reference.

 

Car is Mk II OCTAVIA SCOUT. 2lt diesel purchased in Australia so right hand drive ( like the UK)

 

Trying to track down a central locking issue which only happens in out HOT summer!  Car randomly and sometimes repeatedly locks itself - even with the engine running!

 

I'm thinking it's a connector problem or even a pinched wire, so I may need to follow wires (OMG!!!)

 

Can anyone tell me where the central locking controller is physically located in a right hand drive version.

 

Not looking for fault tracing help unless you've experienced and fixed it.

 

Appreciate any help!

 

Cheers Rob.

The drivers door lock is a master for control of other door locks. Common problem on Mk2 is a broken wire in the elephant truck that connects the door to the body. Open the driver's door, pull back the trunking at both end and look for broken wires.

 

Also check the door open indication on the dashboard for each door in turn. If the driver's door indication is not there, it is likely you will need a new door lock (failed microswitch). 

Another symptom of this is the one you found - door relocks by itself after about 30 seconds because there is no indication that the door has been opened.

What year is the car Rob?

For cars made before May 2011, J393 central convenience unit is behind or under the glove box as far as I can tell from wiring diagram.

 

As far as I can see, all the lock units contain are microswitches, motors and resistors, so I don't think there can be a 'master'?

Edited 16 December, 20205 yr by Wino

Your right Wino in that all doors have microswitches and these are used for the same functions as those on the driver's door. On face lift models, from what I have been able to fathom out, the drivers door module contains "intelligence" and sends instructions to others doors to lock and unlock. I may be wrong but that is how it looks to me.

 

On the point about  intelligence, When my  driver's door lock was changed last year, it had to be programmed to make the light work on the bottom of the door card. Earlier this month it had to be re-programmed again as the Entry Light on the underside of the driver's mirror had become de-activated; perhaps as a result of the battery being disconnected for a while.

 

Just to put the progress(!) made in this area into perspective, my first Passat (new) had a pneumatic door locking system!

 

Thanks folks!

 

I thank you for your responses, and assume, since I said I'm in Australia, that "drivers side" is "right side"

 

A nerdy semantic point ... "Drivers door" refers to the side the steering wheel is ... In Australia and UK (and many other countries) this is the right side of the vehicle. However the manufacturer is  essentially German, so they would consider the drivers side to be the left side.

 

Is the door lock controller changed for vehicles sold in Left hand drive vehicles? Surely this would lead to enormous  complication in parts stocking.

 

The vehicle was built in August 2011.

 

A broken wire could explain this curious behaviour I guess, but I doubt that would only show itself in hot weather, and further get worse as time passes.

 

I have not noted any sign of door sensor switch failures.

 

I will certainly follow "broken wires" up but I will also look for points where wires might get pinched.

 

Do you know where I can get info on what various wires leading to the controller do? I am particularly suspicious of the centre console lock switch wiring run and would like to disconnect it at the controller as a diagnostic measure.

 

Re the pneumatic lock actuator:-

 

I played with one of those on an earlier (Mk 4?) Golf my son owned (before he purchased a frustratingly idiosyncratic fiat 500!)

 

Have also seen a uTube Flic of a Golf being unlocked with a sharp puff of air from a holed tennis ball applied to the keyhole!

 

Regards,

 

Rob.

 

 

 

 

No j393 central convenience module fitted after April 2011 to your car as far as I can see, so the locking is controlled by the combination of lock units, centre console switch unit (got a photo?), door control units under the switch panels on the doors (these are what the front lock units themselves connect directly and only to) and BCM, I think. 

 

I don't understand the system, but do have circuits which may be useful.  The two front door control units are connected by CAN to the network. For models with rear electric windows, the door control modules are connected by LIN to the front ones on the same side.

You can obtain these diagrams yourself for a relatively small fee (under £10 here) if erWin Skoda works from down under.  I believe you can also get wiring diagrams specific to your VIN, but only to view or print rather than download. May still be the way to go for your situation, to simplify things as much as possible

 

I'll have another look around the appropriate general wiring diagrams today, and see if any testing/diagnostic ideas 'leap off the page'. 

How many electric windows on your car?

 

Edited 17 December, 20205 yr by Wino

Thanks for that suggestion, Wino, erWin appears accessible here (🎶 everyth'ns up to date in Melb'n city 🎶 😄) 

 

I will investigate subscribing.

 

If I can disconnect the console switch wires at the controller that should help. It has to be a problem with something that is able to lock all doors at once.

 

If you can see what wires they are (I doubt CAN is involved in that connection) that would be most appreciated!

 

Hope you and yours are OK in this strange era of modern human history. We seem to have Covid19 under control (nearly eradicated in fact) here in Australia, but it's a tenuous situation. All it takes is a silly mistake by an individual and things can start to unravel.

 

Cheers,

 

Rob.

Thanks for the good wishes Rob. All OK here thanks.

Wasn't meaning to suggest Australia was beyond beyond, just that erWin was the result (AiUI) of EU anti-monopoly laws, so might not have applicability/access worldwide.

 

How many electric windows on your car?

 

No worries, I think we and the UK are pretty similar re trade agreement and copywriter laws.

 

The car has 4 electric windows ...

 

And pretty much all the usual bells and whistles for that era (no collision avoidance or lane departure warnings - but IMHO, if you can't do those things yourself,you should leave the driving to someone competent anyway 😉

 

It's the "Scout" version of the Octavia - AWD, 2 LT Diesel, 6 SPEED DSG. We've had it from new and are very happy indeed with it. Tows a camper trailer with little noticable effort.

 

Had one other curious problem which has appeared in these pages - engine running cool.

 

Fortunately amongst the il-informed opinions, one article was correct - there is an inline (dumb wax bulb type) thermostat on top of the transmission under the air intake trunking. It had failed open (as they always do) so engine overcooled. New 'stat cost not much on eBay and easy to replace.

 

Car warms quickly, runs at correct temp (90C) and returns best fuel economy again.

 

Never listen to anyone who says diesels always run cool!

 

Regards,

 

Rob.

 

Does anyone no  where is central locking module located Skoda Octavia MK2 1.6TDi thanks