240 General: - Heated rear window relay location

Shamrock64 · Oct 1st, 2022, 18:55

Hi. I have 1991 240 Estate Automatic RHD and am trying to replace the heated rear window relay. I have a Volvo OEM relay, I've looked at all the diagrams/pictures on the internet, have removed the glovebox together with the underdash felt and plastic central console fairings and can't see it anywhere! Can someone please, in simple layman's terms, tell me or send a diagram showing me EXACTLY where it is? Also, now whenever the ignition is on the tailgate wiper is on and I can't turn it off at the switch (I wouldn't mind but I haven't disconnected anything)! HELP!

Moomoo · Oct 2nd, 2022, 08:33

Do you have a wiring fault where the cable goes through the tailgate hinges, very common! Mine is rewirered from under the headlining.

Shamrock64 · Oct 2nd, 2022, 17:49

I was wondering that but I only had the loom replaced in mid 2021 and only done 5K miles max since. I'll have to drop the Volvo specialist who did it a line and see what they suggest. Thank you.

Angie · Oct 7th, 2022, 14:20

My screen heater only works intermittently because when the wiring loom was replaced, the earth wire between the two halves of the hinge had broken and wasn't reconnected. I think the earthing works through the lock sometimes, hence occasional function. It's one of those little jobs which I should have had done years ago!

Bob Meadows · Oct 7th, 2022, 15:43

A quick test with a 12v bulb and a couple of wires should help to trace a fault:~
At the rear screen connect one wire to a descent earth and the other to one of the fine heater wires, screen heater on - the bulb should light up.
Bob.

Clan · Oct 7th, 2022, 15:52

Quote:

Originally Posted by Shamrock64

Hi. I have 1991 240 Estate Automatic RHD and am trying to replace the heated rear window relay. I have a Volvo OEM relay, I've looked at all the diagrams/pictures on the internet, have removed the glovebox together with the underdash felt and plastic central console fairings and can't see it anywhere! Can someone please, in simple layman's terms, tell me or send a diagram showing me EXACTLY where it is? Also, now whenever the ignition is on the tailgate wiper is on and I can't turn it off at the switch (I wouldn't mind but I haven't disconnected anything)! HELP!

isnt it in the left side of the passenger footwell tucked down behind the galvanised panel on the floor ?

Bob Meadows · Oct 7th, 2022, 19:17

Hayes manual for the 200 series 1974- 1993 show the relay behind the glove box :~ could be accessible by removing the felt/side trims?
lower right (Relay 10)
Bob.

Oct 1st, 2022, 18:55	#1
Shamrock64 New Member Last Online: Oct 2nd, 2022 17:49 Join Date: May 2021 Location: Calne	Heated rear window relay location Hi. I have 1991 240 Estate Automatic RHD and am trying to replace the heated rear window relay. I have a Volvo OEM relay, I've looked at all the diagrams/pictures on the internet, have removed the glovebox together with the underdash felt and plastic central console fairings and can't see it anywhere! Can someone please, in simple layman's terms, tell me or send a diagram showing me EXACTLY where it is? Also, now whenever the ignition is on the tailgate wiper is on and I can't turn it off at the switch (I wouldn't mind but I haven't disconnected anything)! HELP!

Oct 2nd, 2022, 08:33	#2
Moomoo VOC Member Last Online: Today 20:15 Join Date: Aug 2021 Location: Ashbourne	Do you have a wiring fault where the cable goes through the tailgate hinges, very common! Mine is rewirered from under the headlining. __________________ It’s pointless having a battle of wits with unarmed people!

Oct 2nd, 2022, 17:49	#3
Shamrock64 New Member Last Online: Oct 2nd, 2022 17:49 Join Date: May 2021 Location: Calne	I was wondering that but I only had the loom replaced in mid 2021 and only done 5K miles max since. I'll have to drop the Volvo specialist who did it a line and see what they suggest. Thank you.

Oct 7th, 2022, 14:20	#4
Angie Premier Member Last Online: Today 17:03 Join Date: Apr 2011 Location: Lostwithiel	My screen heater only works intermittently because when the wiring loom was replaced, the earth wire between the two halves of the hinge had broken and wasn't reconnected. I think the earthing works through the lock sometimes, hence occasional function. It's one of those little jobs which I should have had done years ago!

Oct 7th, 2022, 15:43	#5
Bob Meadows Premier Member Last Online: Today 19:45 Join Date: Sep 2017 Location: STANDISH LANCASHIRE	A quick test with a 12v bulb and a couple of wires should help to trace a fault:~ At the rear screen connect one wire to a descent earth and the other to one of the fine heater wires, screen heater on - the bulb should light up. Bob.

Oct 7th, 2022, 19:17	#7
Bob Meadows Premier Member Last Online: Today 19:45 Join Date: Sep 2017 Location: STANDISH LANCASHIRE	Hayes manual for the 200 series 1974- 1993 show the relay behind the glove box :~ could be accessible by removing the felt/side trims? lower right (Relay 10) Bob.

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