After fit parking sensors
Thread Starter
Junior Member
Joined: Aug 2014
Posts: 15
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clk320
After fit parking sensors
Hi
I have bought a set of parking sensors (Chinese, $25), which I intend to fit.
I have fitted these previously on a vehicle without a canbus and they operate satisfactorily.
However, I am concerned about the wiring on the 320. The instructions state that the front sensors should be wired into the brake switch, whilst the rear sensors should be wired into the reverse light switch.
I am worried that this type of wiring could upset the canbus and cause problems.
It appears that there are no resistors in the sensor kit, so can anybody tell me if I can fit it without causing any problems? If not, what do I need to add to the kit in order to use the brake and reverse light connections?
If I cannot connect to the lighting loom I intend to loop into the cigarette lighter and use separate switches in order to operate the sensors - however, I would prefer not to go down that road.
Any help will be gratefully appreciated.
Regards
I have bought a set of parking sensors (Chinese, $25), which I intend to fit.
I have fitted these previously on a vehicle without a canbus and they operate satisfactorily.
However, I am concerned about the wiring on the 320. The instructions state that the front sensors should be wired into the brake switch, whilst the rear sensors should be wired into the reverse light switch.
I am worried that this type of wiring could upset the canbus and cause problems.
It appears that there are no resistors in the sensor kit, so can anybody tell me if I can fit it without causing any problems? If not, what do I need to add to the kit in order to use the brake and reverse light connections?
If I cannot connect to the lighting loom I intend to loop into the cigarette lighter and use separate switches in order to operate the sensors - however, I would prefer not to go down that road.
Any help will be gratefully appreciated.
Regards
MBWorld Fanatic!
Joined: Mar 2008
Posts: 1,232
Likes: 168
From: Glasgow, Scotland, UK
SL 350 R230 (3.7L with AMG Speedshift autobox)
I would just try it!
Connect the two one power wire into the 12V positive at the brake light, the other to ground and see if you get a dash error, if not then happy days.
I do not think there will be any issues as the sensor surely uses minimal current, normaly the canbus errors are when the current is not high enough, making the ECU beleive the bulb is out.
Connect the two one power wire into the 12V positive at the brake light, the other to ground and see if you get a dash error, if not then happy days.
I do not think there will be any issues as the sensor surely uses minimal current, normaly the canbus errors are when the current is not high enough, making the ECU beleive the bulb is out.
Thread Starter
Junior Member
Joined: Aug 2014
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clk320
Thanks for your reply and your confidence.
My son works for BBC and they use Mercedes vans for outside broadcast purposes. They have fitted extra equipment and screwed the canbus, requiring a re-build (expensive). I am very wary therefore. Do you have any experience of doing this?
My son works for BBC and they use Mercedes vans for outside broadcast purposes. They have fitted extra equipment and screwed the canbus, requiring a re-build (expensive). I am very wary therefore. Do you have any experience of doing this?
MBWorld Fanatic!
Joined: Mar 2008
Posts: 1,232
Likes: 168
From: Glasgow, Scotland, UK
SL 350 R230 (3.7L with AMG Speedshift autobox)
Thanks for your reply and your confidence.
My son works for BBC and they use Mercedes vans for outside broadcast purposes. They have fitted extra equipment and screwed the canbus, requiring a re-build (expensive). I am very wary therefore. Do you have any experience of doing this?
My son works for BBC and they use Mercedes vans for outside broadcast purposes. They have fitted extra equipment and screwed the canbus, requiring a re-build (expensive). I am very wary therefore. Do you have any experience of doing this?
Thread Starter
Junior Member
Joined: Aug 2014
Posts: 15
Likes: 0
clk320
Thank you for your reassuring reply. I shall try it and let you know what happens. As summer is coming on I am now driving the beast, so it may be some time before I get round to doing it, as I want to enjoy the car whilst the weather is good and not spend time fettling it.
