I had a new double din head unit installed in my 98 ML320 this past Sunday. It works great, and I'm very happy with it. Since the install though, several times when shutting off the truck, I've gotten a single beep tone from the instrument cluster, and all of the lights in the instrument cluster flash on briefly. It does not happen every time I shut off the truck. Anyone have any idea what could cause this? I guess it could be coincidence, but I'm thinking it's probably somehow related to the stereo install. Thanks.
Beep Tone On Shut Off
1 - 5 of 5 Posts
2000 ML55 sold? 2013 ML500,? 2017 C43 AMG,1929 Victory 6 roadster, 1927 Dodge 4 sedan, 1929 Dodge
Joined
·
6,349 Posts
I would start be taking the fuse of the stereo out and see what happens. Have a look on your odometer and see if it reads anything when it beeps.
Sent from AutoGuide.com Free App
Sent from AutoGuide.com Free App
I kept a close eye on the instrument cluster yesterday when shutting off the car. It happened again, there was no message in the odometer. It happens so quick, it's hard to tell what it's lighting up in the instrument cluster. Not all of the lights are flashing on though. It seems more like something electrical to me. Next week the truck goes in for an inspection and an oil change. I'm going to ask them to check it out then.
So I got this figured out today. It turned out to be a mistake made by the installers. Chances are none of you will run into the same issue, but I started the thread, so I thought I should post back and finish it.
I pulled the stereo out this morning. They had told me that they spliced into the accessory outlet wiring for power, because the accessory wire in my truck's radio wiring harness was always hot. I checked that with a meter, and found that they were wrong, as I suspected. It went hot and cold with the ignition. I disconnected their power wire and wired it up properly to the truck's harness.
I started up the car, the stereo came on, then I shut off the car, and the stereo stayed on, as well as my trip computer, temperature reading, odometer, and clock. I powered the stereo off with the power button, and it turned everything off. I pulled everything out again, and cut their zip ties so I could check the wiring between the two wiring harnesses. They for some reason spliced the power antenna wire into the 12v accessory wire. They did this on the stereo's wiring harness, so it wasn't like they just mixed up the wires when they were making connections between the two harnesses.
I can't think of any reason why they would have done this. With it disconnected, all of my issues went away. I'll be calling them on Monday to see about a partial refund, although I don't expect to get very far with that.
I pulled the stereo out this morning. They had told me that they spliced into the accessory outlet wiring for power, because the accessory wire in my truck's radio wiring harness was always hot. I checked that with a meter, and found that they were wrong, as I suspected. It went hot and cold with the ignition. I disconnected their power wire and wired it up properly to the truck's harness.
I started up the car, the stereo came on, then I shut off the car, and the stereo stayed on, as well as my trip computer, temperature reading, odometer, and clock. I powered the stereo off with the power button, and it turned everything off. I pulled everything out again, and cut their zip ties so I could check the wiring between the two wiring harnesses. They for some reason spliced the power antenna wire into the 12v accessory wire. They did this on the stereo's wiring harness, so it wasn't like they just mixed up the wires when they were making connections between the two harnesses.
I can't think of any reason why they would have done this. With it disconnected, all of my issues went away. I'll be calling them on Monday to see about a partial refund, although I don't expect to get very far with that.
1 - 5 of 5 Posts
