fix flashing arrow , volvo v40 transmission limp mode
i have a 2001 volvo v40 , had the flashing arrow and transmission goes into limp mode (3rd gear all the times driving) .
I fixed this in 30 minutes ...
look on your transmission near the Neutral Saftey Switch (gear sensor)
it is on the top of transmission near the airbox ...
near the Neutral Saftey Switch is a label on your transmission , read it and write it down , mine is AW50-55 , this is your transmission model number
go on ebay or on some auto parts website and order a brand new Neutral Saftey Switch.
take out the old switch and put in the new one and this fixed my car , runs like new now ...
when you put in the new Neutral Saftey Switch , block wheels and put car in reverse and move the switch around so the 'Back-Up Lights on the rear of the car , the white lights come on' so you know the switch is aligned correctly and then tighten down the two bolts on the switch. then put your car back in park.
check and tighten anything you took part to get to switch , i only had to take the battery and the battery tray out to get to mine.
after that take a scan tool , diagnostic code reader , i use a cheap centech one , and erase all codes in your car , now drive it around to see if it shift gears good .
this little part fixed my car , symptoms where erratic , it worked sometimes and sometimes didn't , was a real pain , but good thing i found out what it was .