BenzWorld Junior Member
Date registered: May 2019
Vehicle: 2001 ML55 AMG, 2005 E55 AMG, 2009 E350 4MATIC, 2000 C230 Kompressor
Location: Shrewsbury, MA
Mentioned: 0 Post(s)
Quoted: 7 Post(s)
2001 ML55 AMG No Crank, No Start - Rookie Mistake
Hi everyone, I'm new to the BenzWorld forum but have a MBWorld account and still have a Club202 account! I have noticed that the BenzWorld forum for the W163 gets pretty good amount of traffic and responses from Witek, 43spd, mattml430, noodles, etc, etc. You guys are awesome. Anyhow a few months ago I purchased a 01 ML55 AMG w/ 89,000 miles on it that needed some pretty significant TLC. Over the past few months I've been working on getting it up to spec. Recently though, I believe I may have caused some significant electrical damage that is now causing the car to intermittently start.
Here's what happened...........so the previous owner had Best Buy install a new headunit that had Sirius, bluetooth, etc. So since I have the car just about all in pieces since I'm doing a full overhaul of the system, redoing the carpets, leatherique on the seats, etc, etc I decided to check to see if the original factory Alpine unit still worked so I plugged it into the factory harness (with the battery still on the charger and at 100% charge.....also without the keys in the ignition) and out of the corner of my eye I see the dash lights flash for a split second and next thing I know the car won't start anymore.
Here's the catch though, now if I leave the car alone for a few days it'll start right up with no issues but then after turning it off and trying to restart it.......no dice. Additionally, upon plugging in the old headunit and aftermarket headunit, there's no power to them anymore.
To add more context, one thing I didn't even pick up on (which I should have) is that the factory harness was tapped into at the pink (ignition/switched) wire (I believe?) and the brown (ground) wire for the Sirius setup that was installed with the newer headunit. Could this have caused this issue or did I totally goof by plugging in the factory headunit with the car on a battery charger?
I've scanned with STAR and get a bunch of CAN bus errors (obviously) but DAS still recognizes all of the 3 keys as noted by the light blinking in position 1. I can post the codes when I get a chance, but I'm not seeing any fuses blown or anything like that. Nor am I getting a 'start error' message on the cluster.
Anyone have any insight here? I would really appreciate it. I would love to get this beast finalized and back on the road!