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master benz tech 10 years

Old 09-10-2012, 06:56 PM
Junior Member
Join Date: Sep 2012
Posts: 1

I am retrofitting a 1983 300td with a center console and hazard switch from a 240 and the buzzing won't stop. There were 8 prongs on the old switch and 7 on the new. Do I need to put the 49 and 49a together? Or is there a way to jump the switch and just have my signals working and not the hazards? I replaced fuses already and checked connections. The buzzing will sometimes stop when hazard switch is engaged.
Old 10-06-2012, 08:28 PM
Junior Member
Join Date: Sep 2012
Posts: 5
Default 300 SD 1983 Hi thanks for the offer...

Our drivers seat moves forward and it is smooth and not noisy. When you move seat backwards, it makes a noise, like a ratchety sound but it still moves. The sound comes from under the seat. Can you give us a hint? I respect your years of experience
Old 10-06-2012, 08:31 PM
Junior Member
Join Date: Sep 2012
Posts: 5

I am not sure if I have gotten a hold of MB tech. I am trying to get some help in a seat situation. thanks.

[email protected]

Old 10-07-2012, 09:12 AM
Junior Member
Join Date: Sep 2012
Posts: 5
Default gear box under drivers seat

Hi again MB tech
Thanks for getting back to me so quickly. If and when the seat is pulled to do something with the gearbox, is there a snap connection to the box underneath or do you have to get involved again with the ten wires directly from the switch with undoing and resoldering them and pulling them through? Hopefully it is an easier fix then the switch. The gearbox is under the seat? No switch under hood that will take care of that? Thanks for your help again.


The seat could use some filling - we just bought the car and it is pretty worn. May be a good time to either replace the seat or build the seat up. Thanks
Old 09-28-2017, 10:58 AM
Junior Member
Join Date: May 2017
Posts: 5
Default battery

How long should my battery last? 2013 Sl 550
Old 09-28-2017, 12:15 PM
Join Date: May 2012
Posts: 2,070

Hi Bill - there isn't a definitive amount of time that a battery will last. There are a few factors that can effect its overall life. On average a battery should last 8-10 years. There have been plenty on cases where MB batteries have lasted more than 10 years though.
Old 01-02-2018, 02:37 PM
Junior Member
Join Date: Jan 2018
Posts: 4

Originally Posted by mbtech215 View Post
im a master mercedes-benz technician with 10 years expereiance if you have any questions feel free to ask
Hello and appreciate the offer of help. I am new to this forum as of today Jan. 2, 2018. Hope you can help. I own a SL500 with 45,000 miles. A few days ago I noticed a message in the left module that said "convenience function". In the right module it said "temporarily unavailable". When this is displayed the navigation nor the radio will work. After driving the car for about 15 minutes the display will end and the navigation and radio will work. I am just wondering what might cause this problem and how I can correct the problem. Thanks for your advice. Bob
Old 01-02-2018, 03:11 PM
Junior Member
Join Date: May 2017
Posts: 5
Default Bill

Joined May 2017. I have a MB SL550 2013. 25,000 Miles. Black. Traded a Porsche Cayman S for it even. Same year and same mileage. Was delighted with the deal. Have a mechanic that used to be the head mechanic at a MB dealership in large city near by. Great relationship with him. His shop also has a Lexus mechanic which works on my 2002 SC 430 that I bought new, with 75,000 miles.
Old 12-03-2018, 03:10 PM
Junior Member
Join Date: Dec 2018
Posts: 1
Default 2002 C320 W203 Sunroof/Dome lamp inop

Hello. I have a 2002 C320 W203 and the sunroof and dome lamp and courtesy lights suddenly stopped working. I have checked all the fuses and they are good. The connectors to the center dome/sunroof module are connected correctly. Ultimately I do not know where the power feed to the center dome/sunroof module originates. I also disconnected both drivers and passenger seat control modules due to stop the battery rundown problem. Any suggestions?
Old 12-15-2018, 02:08 AM
Join Date: Oct 2018
Posts: 32

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