Ford C-Max Forum banner

21 - 31 of 31 Posts

·
Registered
Joined
·
5 Posts
I've changed bulps, checked fuse (F84 on my -07 Focus C-Max) and measured the resistance of about 1-8 ohms (varies) from F84 socket to ground when reverse gear is engaged. That't too much for the lights to get enough current. Do I have a faulty switch? Got to try cleaning the contacs an /or use a shortcut to test the wiring but is it possible that there could be other reasons for the high ohmage, like some broke GEM module which according to schematics connected to rev switch?
 

·
Registered
Joined
·
5 Posts
Got the pictures by clearing the browsing data on Chrome and reloading the pages -
reloading doesn't seem to clear the caches and apparently the headers set by the forums software are not set to disable caching.
 

·
Registered
Joined
·
1 Posts
My wife has a 2006 C Max. 1.6TDi 5-speed. She had another irate driver tell her that her reverse lamps weren't working.

After narrowing down the bulbs (both OK) and the fuse in the main fuse box (also OK), I Googled for some answers. There are a few posts on the forums here with explanations on the reverse light switch. I couldn't find any with clear pictures though so hopefully this will help someone else.

If the bulbs and fuse are OK and your reversing lights don't work, then the chances are that the problem is the switch. The switch is located on the gearbox. In my case, on top of the gearbox. It is a relatively simple fix though.

Tools required:
Flat head screwdriver
22mm spanner (or set of vice grips)
patience

Parts needed:
Part number CM5Z-15520-B. In this case, £16 from a main Ford dealer:


The location of the switch is underneath the battery - at the top right of the engine bay in this photo. However, you don't need to remove the battery. Removing the air filter box (circled) will give you enough access.


There is a small, thick rubber band to pop off - visible at the bottom of the picture below.
You also need to disconnect the sensor cable and then the large hose from the air filter box.


Once you have removed the band, the hose and the sensor cable, you can lift the air filter box out. You may need to jiggle it slightly. There is nothing else securing the box but it is set into guide holes.
The picture below shows what it should look like with the air box gone. It took me a while to search around and find the reverse switch, so I have circled the area to look for.


If in doubt, look for cable that goes to the switch. There is a hose containing cables, the reverse light switch branches off the other cables as below. Battery is marked for reference:


Once you find the switch, pop the cable off the top of it. Again, if in doubt, this is right below the battery but you should be able to reach through and see the switch sticking up:


Take your spanner (or vice grips) and remove the switch. This took a bit of effort but once it unstuck, I could unscrew it by hand fairly easily.
Old switch alongside the shiny new switch:


Take the new switch, screw it in by hand, taking care to make sure it is in straight. Give it a tighten with the spanner and then pop the cable back on. The cable can only fit on one way.

You can then pop the air filter box back in, connect the sensor cable and hose again. You should be good to go.
Total time was probably about 40 minutes. But that was me taking my time and also searching around a bit for where the switch was located.
Hi new to the forum having trouble seeing the images as in I can’t see any .
Any help will be greatly received.

Regards paul
 

·
Registered
Joined
·
1 Posts
My wife has a 2006 C Max. 1.6TDi 5-speed. She had another irate driver tell her that her reverse lamps weren't working.

After narrowing down the bulbs (both OK) and the fuse in the main fuse box (also OK), I Googled for some answers. There are a few posts on the forums here with explanations on the reverse light switch. I couldn't find any with clear pictures though so hopefully this will help someone else.

If the bulbs and fuse are OK and your reversing lights don't work, then the chances are that the problem is the switch. The switch is located on the gearbox. In my case, on top of the gearbox. It is a relatively simple fix though.

Tools required:
Flat head screwdriver
22mm spanner (or set of vice grips)
patience

Parts needed:
Part number CM5Z-15520-B. In this case, £16 from a main Ford dealer:


The location of the switch is underneath the battery - at the top right of the engine bay in this photo. However, you don't need to remove the battery. Removing the air filter box (circled) will give you enough access.


There is a small, thick rubber band to pop off - visible at the bottom of the picture below.
You also need to disconnect the sensor cable and then the large hose from the air filter box.


Once you have removed the band, the hose and the sensor cable, you can lift the air filter box out. You may need to jiggle it slightly. There is nothing else securing the box but it is set into guide holes.
The picture below shows what it should look like with the air box gone. It took me a while to search around and find the reverse switch, so I have circled the area to look for.


If in doubt, look for cable that goes to the switch. There is a hose containing cables, the reverse light switch branches off the other cables as below. Battery is marked for reference:


Once you find the switch, pop the cable off the top of it. Again, if in doubt, this is right below the battery but you should be able to reach through and see the switch sticking up:


Take your spanner (or vice grips) and remove the switch. This took a bit of effort but once it unstuck, I could unscrew it by hand fairly easily.
Old switch alongside the shiny new switch:


Take the new switch, screw it in by hand, taking care to make sure it is in straight. Give it a tighten with the spanner and then pop the cable back on. The cable can only fit on one way.

You can then pop the air filter box back in, connect the sensor cable and hose again. You should be good to go.
Total time was probably about 40 minutes. But that was me taking my time and also searching around a bit for where the switch was located.
Apologies - newbie here! How do I view the pictures on Neilw's post?
 

·
Registered
Joined
·
16 Posts
My wife has a 2006 C Max. 1.6TDi 5-speed. She had another irate driver tell her that her reverse lamps weren't working.

After narrowing down the bulbs (both OK) and the fuse in the main fuse box (also OK), I Googled for some answers. There are a few posts on the forums here with explanations on the reverse light switch. I couldn't find any with clear pictures though so hopefully this will help someone else.

If the bulbs and fuse are OK and your reversing lights don't work, then the chances are that the problem is the switch. The switch is located on the gearbox. In my case, on top of the gearbox. It is a relatively simple fix though.

Tools required:
Flat head screwdriver
22mm spanner (or set of vice grips)
patience

Parts needed:
Part number CM5Z-15520-B. In this case, £16 from a main Ford dealer:


The location of the switch is underneath the battery - at the top right of the engine bay in this photo. However, you don't need to remove the battery. Removing the air filter box (circled) will give you enough access.


There is a small, thick rubber band to pop off - visible at the bottom of the picture below.
You also need to disconnect the sensor cable and then the large hose from the air filter box.


Once you have removed the band, the hose and the sensor cable, you can lift the air filter box out. You may need to jiggle it slightly. There is nothing else securing the box but it is set into guide holes.
The picture below shows what it should look like with the air box gone. It took me a while to search around and find the reverse switch, so I have circled the area to look for.


If in doubt, look for cable that goes to the switch. There is a hose containing cables, the reverse light switch branches off the other cables as below. Battery is marked for reference:


Once you find the switch, pop the cable off the top of it. Again, if in doubt, this is right below the battery but you should be able to reach through and see the switch sticking up:


Take your spanner (or vice grips) and remove the switch. This took a bit of effort but once it unstuck, I could unscrew it by hand fairly easily.
Old switch alongside the shiny new switch:


Take the new switch, screw it in by hand, taking care to make sure it is in straight. Give it a tighten with the spanner and then pop the cable back on. The cable can only fit on one way.

You can then pop the air filter box back in, connect the sensor cable and hose again. You should be good to go.
Total time was probably about 40 minutes. But that was me taking my time and also searching around a bit for where the switch was located.
 

·
Registered
Joined
·
381 Posts
Admin said they had a problem with adding/viewing photos early in the new year, I guess they have still to resolve it.
Try reporting your post to bring it to their attention again, Ive not seen a Mod active for a while either.
 
21 - 31 of 31 Posts
Top