I know this issue has been tackled before but the wiring harness, especially between the car and door, can cause lots of problems..

 

The drivers door lock problem on my wife's 2110 Fabia actually turned out to be the dreaded broken wiring, within the door harness, that seems to plaque Skoda's of this age. I replaced the door lock which seemed to fix the problem only for it to return 12 months later. Pulling back the rubber protector in-between the door and car revealed issues with the wiring, not loads of broken wires just a couple of split plastic wire insulation which could go unnoticed. £88 inc vat for a door wiring harness seems to have solved her issue and its an easy non technical, if a little fidly, Job to do.      

Yes seems to be a regular fault, in august 2019 our mk2 was written off by a kind un-insured driver but as we had the car from 2 years old  2010, . new in 2008,  un-clipped the door connection plug  on both front doors  and packed them both with silicone grease before clipping them back in place  never had any issues, now have a 2019 new mk3 and again will be looking at the same sort of action when  the car is just over 2 years old

Murdockman, if this solution worked so well, why wait? Check first to see if it will not void the warranty and if not, do it! You may find you have waited until a wire snaps, prior to using the fix! I have never seen anyone come up with a full fix, although others have suggested replacement under warranty, up to a point and fitment of later, modified wiring looms so unless the supposed modded one does fails too, its a moot point!  think I would slop the grease in though, if I had success on an earlier car.

The point of failure in the wiring harnesses tends to be inside the bellows between the door and the body, not at the connector. On the Superb 2, the factory fix was to lengthen the wires at this point to reduce the strain on them. I can't see how stuffing the connector with grease is going to reduce the strain on these wires.

 

The Sil Grease is a great idea, I can see how that would help, but I wondered if a poor quality harness would fail anyway and does it depend on how often the door is used? I've seen photos of multiple broken door wires on a 5 year old car, whilst my Mrs only had a few split cables but has only done 27K in 11 years. And as she loves her shiny red Fabia, with its big boot space, I do hope the rest of the wiring, within it, is of a better quality. 

 

I could have patched her old harness but I understand that Skoda's replacement has been upgraded because of it's issues. And doing the job, whilst listening to the football, was enjoyable. Saving £200, as opposed to a dealer fix, certainly helped to cushion the blow of loosing to Fulham. Briskoda is a brilliant site and long my amateurs have the confidence to tackle car maintenance, most problems are easily solved by fitting a new part, diagnosing the problem accurately is the hardest part.

 

If anyone would like step by step instructions of  this fix let me know and thankyou.        

It's a poor design, the way the wiring goes straight across horizontally between A-pillar and door. Most cars have a vertical dogleg in the bellows so that the main action is a rotation/twist of the loom bundle rather than pure flex, and there's more slack that way too.

 

If I had a mk2, I think I'd solder in some sections of much more flexible wire between plug pins and the loom inside the door.  

mk1 octavias have the same problems. 50/50 its water getting in the connector and corroding the pins (which the grease trick would help with) or the wires fraying in the bellows from rubbing on each other or pulling apart.

Hi I just posted a site about help with the mrs 1.2 60bhp cambelt change if anyone can help. Thanks.

3 minutes ago, Marc13 said:

Hi I just posted a site about help with the mrs 1.2 60bhp cambelt change if anyone can help. Thanks.

 

I just replied.