Mercedes-Benz C320 Dead Battery Due to Failed Seat Control Module - 83 reports. Re: 2005 Mercedes C240 Parasitic Drain 08/10/2013 12:48 PM If the alternator was the suspect, using the same installed switch on the battery lead from the alternator would have confirmed it. Guess what, no joy..the problem returned around 3 days later, completly draing the new battery. Hey guys, check out what happened to this Mercedes W203 C-Class after it sit with a dead battery. Still nothing. i have put the car on every diagnostic machine except main dealer as they want a ridiculous amount just to check no machine has found any fault. When connected I measure about 5 amps draw at the battery terminal. Just put in a new alternator and battery and the car would not start the next morning. Only thing that worked were the headlamps, heater, and radio..So SAM replaced(!) I have 1999 C280 W202 (112 engine) in excellent condition except for battery drain. Connect the battery to the car and measure after 5 mins, if there is no drain, then it may read 12.58 or around that.
I have a 2002 C240 Mercedes Benz and have the same issue, I have been searching all over the internet for answers and still haven't figured it out as of yet, and to answer your question about these vehicles having this issue, YES! Does it have to go to dealer for CPU reset (2003 Mercedes-Benz C320) Parked car.When I returned I turned key and nothing. Even those systems that stay on all the time, draw very little current typically less than 50 milliampere, and should not drain the battery. Say open circuit is 12.6v. I have a 2001 Mercedes C240 that drains a fully charged battery sometimes overnight, when the engine is not running. Assumed it was the battery and changed it. This did not cure the drain..re-occured 2 days after picking up from the repair shop. everything on the car works all lights, heaters, stereo but overnight the battery drains. If you only have a meter, disconnect a charged battery, wait an hour and measure open circuit voltage. Battery drain in MB C320 Something is draining the battery of my Mercedes 2002 C320. I am experinecing the same problem with battery draining on my 2001 C240. So, was told that it was a faulty battery, replaced the battery ..cost£70. Page 1 of 2 1 2 Next > daverobbo Guest. A defective electrical system, Control Unit or a fault on the CAN Bus (Controller Area Network) are also causes that can cause your Mercedes-Battery battery to die. The C class has a battery drain issue, at least that's what I … The problem is erratic, and does not happen all of the time. i have recently changed the battery had the alternator recondition which is kicking out 14v+ . Had it towed to my mechanic and he changed the starter. The - Mercedes-Benz 2002 C-Class question. I have installed a new … read more Also, this post is very long but there is a lot of history here which I hope will help solve this problem.
The battery charges fine and holds charge when disconnected. ... Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. This is a 2005 C320. 2003 Mercedes-Benz C320 / Changed battery and it... Changed battery and it won't start . C220 battery drain Discussion in 'Electrics, Vacuum, Ignition and ECU' started by daverobbo, Oct 5, 2010. I'm new to this forum so please treat me gently. The car statred immeadiately after a jump, but the alternator was hotter than the engine after 3 min. The battery has been drained down twice. I'm a new owner of a 2002 C-320.
What could possibly be? £390!.
This is your reference point. All Mercedes models develop some … Hello to everyone i have a w211 on a 2003 it a 320 petrol. I've searched posts for ideas and learned plenty but not found solution. Learn about this problem, why it occurs, and how to fix it. If there is drain, it will depend on the load but may read 12.4 or less. C-class battery drain.