Author Topic: Steering column switch problem  (Read 4910 times)

lpeterssen

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Re: Steering column switch problem
« Reply #25 on: September 27, 2025, 19:30:36 »
Congrats Mr Henderson

We are getting closer to the desired point.

Well if fuse 5 smokes, the hazards/flasher relay is defective.  There is no other explanation.

Best regards
Eng. Leonardo Peterssen
www.wiredoktor.com

lpeterssen

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Re: Steering column switch problem
« Reply #26 on: September 27, 2025, 19:42:43 »
That has always been in the car since we have owned it.

I am sure of that but now you have a different wiring harness which is slightly different than the original one that came with your car.

lpeterssen

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Re: Steering column switch problem
« Reply #27 on: September 27, 2025, 20:21:58 »
Congrats Mr Henderson

We are getting closer to the desired point.

Well if fuse 5 smokes, the hazards/flasher relay is defective.  There is no other explanation.

Best regards
Eng. Leonardo Peterssen
www.wiredoktor.com


Try opening the hazard/flasher relay and polish all contacts inside of it.  Maybe are just kind of burned and need a better contact surface to work properly

Best regards
Eng. Leonardo Peterssen
Www.wiredoktor.com

CJHenderson

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Re: Steering column switch problem
« Reply #28 on: September 28, 2025, 13:37:23 »
Will give it a try. I have a flash unit that I got from SLS, it's black square with 4 prongs, 3 vertical and one horizontal blades.
1970 280SL/8 W113 101624 miles.
1950 MG-TD
2021 Harley Davidson CVO Trike

CJHenderson

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Re: Steering column switch problem
« Reply #29 on: September 29, 2025, 18:13:30 »
I cleaned down the flasher relay found it had one side had a material between the contact, cleaned it then #5 fuse went into melt down, unable to save the flasher relay. Another thing is when I removed the sub harness and reconnected the steering column 12 pin plug into the main harness, I lost the windshield wiper function, I preformed the column switch connector ohm test on the wiper push button switch and it failed.
« Last Edit: September 29, 2025, 18:22:47 by CJHenderson »
1970 280SL/8 W113 101624 miles.
1950 MG-TD
2021 Harley Davidson CVO Trike

Sead

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Re: Steering column switch problem
« Reply #30 on: September 30, 2025, 09:17:02 »
Take the turn signal switch out and call me/write on whatsapp: +38761528220 (EU time!). I can lead you to check function of switch. After that you can proceed futher on
Sead
1964 230SL

CJHenderson

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Re: Steering column switch problem
« Reply #31 on: September 30, 2025, 15:44:36 »
Leonardo called it right when he said it was the flasher; I took it apart and cleaned the gunk out of it but it didn't help. I ordered one from Buds Benz which is on back order and will be here in about eight days until then I'll work on other things.
1970 280SL/8 W113 101624 miles.
1950 MG-TD
2021 Harley Davidson CVO Trike

lpeterssen

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Re: Steering column switch problem
« Reply #32 on: October 02, 2025, 18:35:08 »
I cleaned down the flasher relay found it had one side had a material between the contact, cleaned it then #5 fuse went into melt down, unable to save the flasher relay. Another thing is when I removed the sub harness and reconnected the steering column 12 pin plug into the main harness, I lost the windshield wiper function, I preformed the column switch connector ohm test on the wiper push button switch and it failed.

Dear Mr Henderson:

Follow SEAd Guidance on the steering multifunction switch.  He has plenty of experience on those elements.

Regarding the fuses, it is not normal that body melts instead of triggering/breaking the metallic filament.  I think the quality of the fuses you are using is not the right one.

There is an excellent brand named FLOSSER, I like those very much.

Here a link for another brand which is listed as with ceramic body(those do not melt) listed on amazon.

30Pcs GBC European Automotive Fuse Box Assortment Bakelite Auto Fuses 5-30A https://a.co/d/1ZnO0Q6

Best regards
Leonardo Peterssen
Www.wiredoktor.com




CJHenderson

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Re: Steering column switch problem
« Reply #33 on: October 03, 2025, 14:35:51 »
Thank you for the offer, I will get in touch with you when I return home from my trip to see family and to depress after fighting with this car.
1970 280SL/8 W113 101624 miles.
1950 MG-TD
2021 Harley Davidson CVO Trike

 

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