Wipers only work when i indicate left
I think you need to replace the wiper switch.
Removing the switch can be a pain.. Firstly, you need to remove the trim around the steering column. Now this may be difficult as you may need to remove the steering wheel first. This is complicated by the fact that you have Airbag on the wheel that must be disarmed properly by a tech...
Scared yet..? Don't be, ok if you can get the trims off, check and see if the switch is screwed into the column retainer. If you can see the screw heads by looking down the shaft of the switch, good, remove the screws and the switch should come out just enough for you to unlock the wiring, unlock the wiring taking note of which plugs go where and take the stalk out. If you cannot see any screws, then remove the steering wheel as it may all be one assembly. Once the wheel is off and the trims are off, there should be four screws holding the assembly onto the column. Once these are out and you have released the wiring, the switch assembly should come out. Next, look for the wires which go up inside the stalk itself and take note of where they connect. Now, on the end of the stalk, there should be a small cap which covers a clip which holds the switch onto the end of the stalk. Gently prise out the cap and the clip (dont lose either the cap or the clip) and draw the switch off the end of the stalk. If it is the type I am thinking of, the switch will come off and you can see the wiring into the switch. Now, gently give each wire a tug, that is, pull it back from the switch. If any of the wires seems to stretch, then replace that wire, crimp or solder a new length of wire to the switch and to the connection on the other end. If non of the wires stretch, pull them the other way, down to the main assembly and replace any that stretch.
Then, reassemble the switch and stalk, replace the trims and refit the steering wheel.
If you have an airbag in the steering wheel, you may need special screwdriver tips to remove the screws holding the steering wheel cover on, the nut holding the wheel on is under this cover. They usually use torx screws in here.
The steering wheel is fitted to a tapered shaft so leave the nut on a couple of threads and by placing both feet on the fllor behind the pedals and pulling, you can usually get the wheel off otherwise you may have to use a wheel puller. NEVER use a hammer on this assembly EVER !!!!
Once the airbag is off, dont turn the ignition on as this may set a fault code and cause the airbag lamp to come on disabling the airbag system. DONT probe any wires that have a yellow sheath or outer covering or yellow connectors on them. You really dont want an airbag going off anywhere near your head !!!
Take your time and if you need too, draw little pictures of where things went to remind you when you reassemble things.
Now, there is always the chance that you have a body control module, this means that when you operate a switch, all you are doing is sending a signal to a computer. This computer then operates the device. If this is the case then you need to check the switch ( yes I know this is a pain) but then you may need to check the control module as well. This may be better done by a professional.
Jul 03, 2012 |
2003 Mercedes-Benz C-Class