1998 Volvo S70 left turn signal does not work

Not sure what model you have,but try this forum.
http://volvoforums.com/forum/volvo-s70-33/turn-signals-do-not-flash-49453/

Get a schematic for the car and clean and work every connection in the wiring to your switch. Also chemically clean the innards of your switch(s)

I have had this happen before - this is the multifunction switch on the steering column. The one on my Ford took about 10 minutes to change (two bolts). My problem - I would turn my lights off, then turn them back on and nothing, then they would suddenly pop on. after a bit my lights would not come on at all. I had to drive with my Flash to Pass lights for a couple of days when driving at night.

I hope this helps!

FLASHER UNIT BUILT IN THE TURN SIGNAL WIND SHIELD WIPER SWITCH YOU HAVE TO REPLACE TURN SIGNAL SWITCH TO FIX FLASHER.SINCE ALL BUILT IN ONE UNIT.

i dont have a listing for it at my work. so im thinking it's a dealer item, shouldn't be hard to change though.

The flasher unit will not cause an overload in the circuit.Activate the four way flasher and if the fuse does not trip then it appears there is a short in either the left or right signal circuit when the steering wheel is turned.The position of the steering wheel will determine which side is shorting out if this is the cause

try checking the input & out put signals from your vehicle speed sensor

yes it uses r134 a port located on left side top of car front view by the window washer fluid plug is blck unscrew plug add r134a while car is on and ac is on

there are three different dash panels used in the volvo v70 and s70 for 1998.
2 of them are made by VDO the third is made by YAZAKI

- the YAZAKI dash has a small rubber plug just to the left of the speedometer, pop it out with a small screwdriver and and use the screwdriver to push in the button behind it then reinstall the plug

- the EARLY VDO dash cannot be reset without a factory scan tool production date before 8/97

- the LATE VDO dash can be reset, turn ignition off, press and hold trip reset button, turn ignition on (still holding button) hold for 10 seconds release when light flashes

reach screwdriver down between headlight and marker to releace clip, pull forward.