S40: - Locking failure, Buttons slugish and just twitch

Rosie12 · Jun 5th, 2020, 06:36

HI,
the Door locking feature is now failing and the buttons cant move into the high position...I can manage to pull them up enough so the door opens.

Fortunately I have a front door key and can get in to the car.

Any help on how to go about fixing this problem would be great,

many thanks in advance,

Brendan

ITSv40 · Jun 5th, 2020, 07:37

Model and age of car would be useful.

If it is a classic S40 1996 - 2004 most likely cause is the lock button is fouling on the door card. Cleaning and a drop of lube normally cures.

Ian21401 · Jun 5th, 2020, 10:27

My 1992 940 was doing this a few months ago in the colder weather after not being used for a few days. The immobiliser would activate and deactivate but the central locking would not lock or unlock unless I used the key in the driver’s door lock. Charging the car’s battery for 24 hours seemed to cure it. It’s not happening now in this warmer weather and the car is being used a little more so the battery is being charged.
I had suspected that the ageing locking linkages may need some lubrication but haven’t done anything about that yet.

Jun 5th, 2020, 06:36	#1
Rosie12 New Member Last Online: Jul 27th, 2020 04:34 Join Date: May 2012 Location: Nedlands	Locking failure, Buttons slugish and just twitch HI, the Door locking feature is now failing and the buttons cant move into the high position...I can manage to pull them up enough so the door opens. Fortunately I have a front door key and can get in to the car. Any help on how to go about fixing this problem would be great, many thanks in advance, Brendan

Jun 5th, 2020, 07:37	#2
ITSv40 VOC Member Last Online: Today 08:34 Join Date: Mar 2008 Location: Northampton	Model and age of car would be useful. If it is a classic S40 1996 - 2004 most likely cause is the lock button is fouling on the door card. Cleaning and a drop of lube normally cures. __________________ 2001 V40 2.0lt Sport lux - Daily Driver. 174k miles. 2003 C70 2.4 GT Convertible - Garage Queen. 65k miles. http://www.neptuno6benagil.com

Jun 5th, 2020, 10:27	#3
Ian21401 Premier Member Last Online: Feb 11th, 2023 20:32 Join Date: May 2010 Location: Blyth, Northumberland	My 1992 940 was doing this a few months ago in the colder weather after not being used for a few days. The immobiliser would activate and deactivate but the central locking would not lock or unlock unless I used the key in the driver’s door lock. Charging the car’s battery for 24 hours seemed to cure it. It’s not happening now in this warmer weather and the car is being used a little more so the battery is being charged. I had suspected that the ageing locking linkages may need some lubrication but haven’t done anything about that yet. __________________ Ian. Since 2005: 1992 Volvo 940 estate 2.0L. Manual. Daily driver and workhorse.

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