Hi everyone! 

 

Recently I bought a Fabia mk1 2001 to be my second car. Everything is fine exept a few things. The car does not recognise if a door is opened (does not matter wich door) so when I open one the interior lights won't turn on and there is no warning on the dash. Also the car relocks its self after a time even with a fully opened door. Does anybody have any suggestions where to look for the fault? Boot is fine and shown on the dash when opened. 

Thank you

These are symptoms of the very common door lock microswitch failure.

17 hours ago, TMB said:

These are symptoms of the very common door lock microswitch failure.

Could it be faulty microswitch in all four doors? 

1 hour ago, SpitFire77 said:

Could it be faulty microswitch in all four doors? 

Yes, or it could just be the one in the driver's door, or a broken central locking wire in the driver's door A post, which will need a continuity west to diagnose.

On 07/04/2021 at 15:41, KenONeill said:

Yes, or it could just be the one in the driver's door, or a broken central locking wire in the driver's door A post, which will need a continuity west to diagnose.

Hi, I have quite similar problem. I replaced driver's microswitch recently, but it didn't help (lights are not lighting up after opening the doors). But I would be interested in more details about central locking wire (as my car was equipped with central locking from the factory) so I would like to check that before replacing whole lock, or something quite expensive like that. Thanks for help.

2 hours ago, matej357 said:

I replaced driver's microswitch recently, but it didn't help

Typo in my previous; it should have read "continuity test".

13 hours ago, matej357 said:

Hi, I have quite similar problem. I replaced driver's microswitch recently, but it didn't help (lights are not lighting up after opening the doors). But I would be interested in more details about central locking wire (as my car was equipped with central locking from the factory) so I would like to check that before replacing whole lock, or something quite expensive like that. Thanks for help.

 

The wire that is earthed when the microswitch responds to door opening is a thin brown/yellow one which goes into pin 2 of the brown 6-way connector at the A-pillar.

Unplug that 6-way connector and use a test meter to see if that wire does or doesn't get connected to earth/chassis with the door open. Pin 5 of that same connector is one of the earth connections to the door, so you can measure between 2 and 5. 

Edited 25 August, 20214 yr by Wino

17 hours ago, matej357 said:

Hi, I have quite similar problem. I replaced driver's microswitch recently, but it didn't help (lights are not lighting up after opening the doors). But I would be interested in more details about central locking wire (as my car was equipped with central locking from the factory) so I would like to check that before replacing whole lock, or something quite expensive like that. Thanks for help.

The door locks have 3 microswitches.

You could also have a broken wire problem as explained above.

Some have 5!

(Full disclosure, that may well be a 9N Polo one not a Fabia one though, can't remember)

 

Edited 25 August, 20214 yr by Wino

This is the circuit board of a FII.

It looks like there is room for 2 more.

 

Edited 25 August, 20214 yr by 26DIPP

So, yesterday I took it apart again and found out, that there us loose connection semwhere between the main microswitch and the car. Upon further inspection I figured out that it was neither cable of the microswitch nor door wiring harness, but connector on the lock itself (pin 7 had defective connection with board). After re-soldering

it solved the issue - interior lights work, central locking works, "headlights on" warning works, also I had problem with locking the car from inside, which is also fixed.

Often seems to be that pin, you may have seen a video of me wobbling it in another thread.

 

Hi,

 

I have same problem with my skoda Fabia 1 (year 2000).

I'm wondering if microswitch on page below will fit into my car?

Does anybody know?

 

Door Sensor Lock Micro Switch for Octavia Fabia Superb Passat B5 Bora Golf 4 MK4

 

Thanks.

I'm having the same problem 2014 skoda rapid however its only opening the doors that doesn't trigger the reading light 

 

the slider works to switch the centre light on manually so i know the bulb works 
 

everything else works fine, dash door icons ,central locking 

 

I don't have any lights on the doors 

 

or could this be switched off/on using vcds? 
 

 

If you need to buy a new door lock, don’t be tempted by the cheap brand new locks on EBay. Experience with a Mk 4 Golf shows they last maybe a year. 
Far better to get a preowned genuine part for not much more. 
I had this a year or so ago in my 2005 Fabia and the modern equivalent lock is fitted to something like a VW T5. 
An improved lock mechanism with a shield over the micro switch to give it more protection.