SL/R230: Suddenly all the lights turned off and the car stopped working!
no, you missed the link to the source in post 11
here are other opinions going both ways:
https://mbworld.org/forums/sl-class-...er-market.html
here are other opinions going both ways:
https://mbworld.org/forums/sl-class-...er-market.html
Nothing to do with cars, just for sharing something none of you have seen
corona live map:
https://gisanddata.maps.arcgis.com/a...23467b48e9ecf6
relax, or not, depending on your age
corona live map:
https://gisanddata.maps.arcgis.com/a...23467b48e9ecf6
relax, or not, depending on your age
Thread Starter
Junior Member
Joined: Nov 2019
Posts: 62
Likes: 5
SL 500 r230
I measured ALL the relais inside the C3. All of of them are fine. So those are not the problem, in this case. Still possible, that something else is defective, but I won't be able to find that kind of error without a complete datasheet... It'll be easier to find someone with the same motor and try to connect the SD to that car. Or even buy a second Multiplexer...
But there is still the possibility, that my c3 is fine and the problem lies within my car. I think I will try to go that rout first.
Right now I am waiting for my new regulator to arrive. I took the old one out already. Fun fact: It is from late 2004, whereas the alternator is 2002, like the car. So somebody already had changed that once.
At the same time I am swapping one of the coolant hoeses going to the heaterpump. Changing the coolant, while I'm at it. Any tips on how to bleed the air out later?
But there is still the possibility, that my c3 is fine and the problem lies within my car. I think I will try to go that rout first.
Right now I am waiting for my new regulator to arrive. I took the old one out already. Fun fact: It is from late 2004, whereas the alternator is 2002, like the car. So somebody already had changed that once.
At the same time I am swapping one of the coolant hoeses going to the heaterpump. Changing the coolant, while I'm at it. Any tips on how to bleed the air out later?
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Joined: Feb 2014
Posts: 276
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SL500, Miata
Thread Starter
Junior Member
Joined: Nov 2019
Posts: 62
Likes: 5
SL 500 r230
I energized each relais with 5V and measured each switchable contact. That is four contacts per relais (two opening, two closing) and 22 relais. Took my quite some time.
To even beeing able to do that I had to solder a wire across all middle pins of those relais. Because it is quite difficult to hold and position four pins at once.
To even beeing able to do that I had to solder a wire across all middle pins of those relais. Because it is quite difficult to hold and position four pins at once.
Thread Starter
Junior Member
Joined: Nov 2019
Posts: 62
Likes: 5
SL 500 r230
Success! I managed to talk to the EMS. Finally.
The problem wasn't the C3, ist was one of two blown fuses inside the motor compartment.
I ran the quick test for the first time since I own the car. Sadly it found a problem I was not aware of yet. The LWR on the left side is showing several faults. Both height sensors seem to have unplausible values and the motor to adjust the light height is not connected or defective.
Oh, And the airbag-controller is not communicating, too. Dang!
On the positive side: I swapped the voltage regulator today. No more overvoltage.
The problem wasn't the C3, ist was one of two blown fuses inside the motor compartment.
I ran the quick test for the first time since I own the car. Sadly it found a problem I was not aware of yet. The LWR on the left side is showing several faults. Both height sensors seem to have unplausible values and the motor to adjust the light height is not connected or defective.
Oh, And the airbag-controller is not communicating, too. Dang!
On the positive side: I swapped the voltage regulator today. No more overvoltage.
