An electrical gremlin puzzle- have you experienced?
Thread Starter
Super Member
Joined: Jul 2007
Posts: 783
Likes: 13
2006 s65. Ford Excursion 6.0. Pontiac GTO convertible. Porsche 944 Turbo SCCA car. Wife-E550 and 968
An electrical gremlin puzzle- have you experienced?
So, my S-class has a new party trick, I was hoping someone on here has seen it before and point me in the right direction; I am out of warranty and don't feel like replacing every part involved below to attempt to guess what the &*^ is going on.
The Scenario:
Battery intermittently drains to zero. No rhyme or reason when. I may leave the car for a week and it starts right up, I may leave it overnight and it's dead as a doornail. I brought it to the dealer to figure out. They left it on a meter for a week and, lo and behold, it functioned perfectly. I brought it home that night and came out in the morning and it was kaput.
But the plot thickens... The night I brought it back from the dealer, I left something in the car. When I approached the car to retrieve it, the dashboard lights were on. I opened the door, the hazards flashed a few times. I retrieved my item, closed the door, and the dashboard lights went off. When I approached the car the next am, the dash was again lit up. Attempting to fire the motor, the battery did not have enough juice left in it to turn over the engine.
I mentioned this to the MB tech, and he said "maybe the keyless go button is shorting or something, and the car is draining the battery".
Rather than replacing the dashboard, the entire keyless go system, and who knows what else, I thought I would check with the MBworld crew to see if anyone had any ideas.
Thanks in advance!
The Scenario:
Battery intermittently drains to zero. No rhyme or reason when. I may leave the car for a week and it starts right up, I may leave it overnight and it's dead as a doornail. I brought it to the dealer to figure out. They left it on a meter for a week and, lo and behold, it functioned perfectly. I brought it home that night and came out in the morning and it was kaput.
But the plot thickens... The night I brought it back from the dealer, I left something in the car. When I approached the car to retrieve it, the dashboard lights were on. I opened the door, the hazards flashed a few times. I retrieved my item, closed the door, and the dashboard lights went off. When I approached the car the next am, the dash was again lit up. Attempting to fire the motor, the battery did not have enough juice left in it to turn over the engine.
I mentioned this to the MB tech, and he said "maybe the keyless go button is shorting or something, and the car is draining the battery".
Rather than replacing the dashboard, the entire keyless go system, and who knows what else, I thought I would check with the MBworld crew to see if anyone had any ideas.
Thanks in advance!
Thread Starter
Super Member
Joined: Jul 2007
Posts: 783
Likes: 13
2006 s65. Ford Excursion 6.0. Pontiac GTO convertible. Porsche 944 Turbo SCCA car. Wife-E550 and 968
Thread Starter
Super Member
Joined: Jul 2007
Posts: 783
Likes: 13
2006 s65. Ford Excursion 6.0. Pontiac GTO convertible. Porsche 944 Turbo SCCA car. Wife-E550 and 968
Member
Joined: Jun 2014
Posts: 90
Likes: 0
From: SoCal USA
S65 AMG
Check the battery cables for loose connections. Also, could it be that your alternator is intermittently not charging the battery enough thus causing the drain the next time you attempt to start it?
Thread Starter
Super Member
Joined: Jul 2007
Posts: 783
Likes: 13
2006 s65. Ford Excursion 6.0. Pontiac GTO convertible. Porsche 944 Turbo SCCA car. Wife-E550 and 968
nope, that has been checked. Dash randomly comes on in the middle of the night draining the battery. Probably in the keyless go system.
