Flashing dash lights
Thread Starter
Newbie
Joined: Dec 2024
Posts: 10
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E220 bluetec
Flashing dash lights
Hello all, my 2015 E220 bluetec estate has this morning started with a serious & confusing problem. Whilst driving the blind spot warning lights & messages appeared on the instrument panel along with the lane departure warnings, the SOS was flashing, the indicators stopped working. The Bluetooth etc also stopped working. When I got home & switched it off, all the lights & instrumentation lights etc were flashing & the car would not start. I connected my fault finder up & four faults are showing C067100 & C073700 & C066300 & C066400 !! Please help.
kind regards
Bob
kind regards
Bob
Super Member
Joined: Mar 2024
Posts: 618
Likes: 241
From: Chicago
19 GLA45, 86 560SL, former: 14 E550 4Matic, 09 E350 4Matic, 83 240D manual, 78 450SLC, 81 500SLC
I don't know what those faults translate to, but unless it's an MB-specific scanner, they might not be telling you the right things.
Get your car scanned ASAP with a Mercedes specific scanner (Launch Creador, a proper Xentry system, etc...)
Get your car scanned ASAP with a Mercedes specific scanner (Launch Creador, a proper Xentry system, etc...)
Super Member
Joined: Mar 2024
Posts: 618
Likes: 241
From: Chicago
19 GLA45, 86 560SL, former: 14 E550 4Matic, 09 E350 4Matic, 83 240D manual, 78 450SLC, 81 500SLC
Out Of Control!!
Joined: Apr 2019
Posts: 12,191
Likes: 6,889
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
Hello all, my 2015 E220 bluetec estate has this morning started with a serious & confusing problem. Whilst driving the blind spot warning lights & messages appeared on the instrument panel along with the lane departure warnings, the SOS was flashing, the indicators stopped working. The Bluetooth etc also stopped working. When I got home & switched it off, all the lights & instrumentation lights etc were flashing & the car would not start. I connected my fault finder up & four faults are showing C067100 & C073700 & C066300 & C066400 !! Please help.
kind regards
Bob
kind regards
Bob
You maybe able to delay fixing this after the holidays by providing good voltage and rebooting your chassis.
Once you have a solid fault report we'll understand what modules are actively calling your attention fir service.
Drive on back roads while your chassis is unstable.
Last edited by CaliBenzDriver; Dec 5, 2024 at 08:22 PM.
Thread Starter
Newbie
Joined: Dec 2024
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E220 bluetec
What you witnessed today is referred to as 'Xmas tree lights" when dash does a light show with everything going nuts at once... thank God you were safe.
You maybe able to delay fixing this after the holidays by providing good voltage and rebooting your chassis.
Once you have a solid fault report we'll understand what modules are actively calling your attention.
You maybe able to delay fixing this after the holidays by providing good voltage and rebooting your chassis.
Once you have a solid fault report we'll understand what modules are actively calling your attention.
Thread Starter
Newbie
Joined: Dec 2024
Posts: 10
Likes: 1
E220 bluetec
Out Of Control!!
Joined: Apr 2019
Posts: 12,191
Likes: 6,889
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
Chassis Reboot is the power cycling with batteries disconnected for 15mn. This should give you a break from "XMas tree" for a while unless a module is actively soaked at footwell or F/R bumper area.
Drive on back roads while your chassis is unstable.
Last edited by CaliBenzDriver; Dec 5, 2024 at 08:23 PM.
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MBWorld Fanatic!
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From: 122W, 37N
2016 E350 4Matic wagon, 2019 Ford Expedition, 2019 Chevy Bolt EV
lotsa lights and lots of faults is as likely to be a wiring issue, or a module with flakey solderless internal connections as anything.
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Thread Starter
Newbie
Joined: Dec 2024
Posts: 10
Likes: 1
E220 bluetec
Hello all, my 2015 E220 bluetec estate has this morning started with a serious & confusing problem. Whilst driving the blind spot warning lights & messages appeared on the instrument panel along with the lane departure warnings, the SOS was flashing, the indicators stopped working. The Bluetooth etc also stopped working. When I got home & switched it off, all the lights & instrumentation lights etc were flashing & the car would not start. I connected my fault finder up & four faults are showing C067100 & C073700 & C066300 & C066400 !! Please help.
kind regards
Bob
kind regards
Bob
Thread Starter
Newbie
Joined: Dec 2024
Posts: 10
Likes: 1
E220 bluetec
UPDATE
UPDATE. one week on & the same problem has come back after clearing itself. I disconnected both batteries for a half hour & cleared the faults & all seemed fine but today my wife was driving home & all the dash lights started to flash with just about every warning message as well. I disconnected both batteries again & left for forty minutes, reconnected & same problem so I tested the battery & the tester said to replace the battery !! New battery fitted & still the same!! Has anyone got any other ideas before I have to book it in please ? Thanks.
UPDATE. one week on & the same problem has come back after clearing itself. I disconnected both batteries for a half hour & cleared the faults & all seemed fine but today my wife was driving home & all the dash lights started to flash with just about every warning message as well. I disconnected both batteries again & left for forty minutes, reconnected & same problem so I tested the battery & the tester said to replace the battery !! New battery fitted & still the same!! Has anyone got any other ideas before I have to book it in please ? Thanks.
Out Of Control!!
Joined: Apr 2019
Posts: 12,191
Likes: 6,889
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
UPDATE
UPDATE. one week on & the same problem has come back after clearing itself. I disconnected both batteries for a half hour & cleared the faults & all seemed fine but today my wife was driving home & all the dash lights started to flash with just about every warning message as well. I disconnected both batteries again & left for forty minutes, reconnected & same problem so I tested the battery & the tester said to replace the battery !! New battery fitted & still the same!! Has anyone got any other ideas before I have to book it in please ? Thanks.
UPDATE. one week on & the same problem has come back after clearing itself. I disconnected both batteries for a half hour & cleared the faults & all seemed fine but today my wife was driving home & all the dash lights started to flash with just about every warning message as well. I disconnected both batteries again & left for forty minutes, reconnected & same problem so I tested the battery & the tester said to replace the battery !! New battery fitted & still the same!! Has anyone got any other ideas before I have to book it in please ? Thanks.
You're up against the heart of the Mercedes system. Not directly an easy fix.
You could have a single issue triggering this chaos to play out.
For a chance of a simple fix: scan the whole chassis to assess latest faults.
Out Of Control!!
Joined: Apr 2019
Posts: 12,191
Likes: 6,889
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
good charging voltage while driving instead of drained by driving yoyo and a 5Yr old or less known-good main battery + AUX.
Chassis Reboot is the power cycling with batteries disconnected for 15mn. This should give you a break from "XMas tree" for a while unless a module is actively soaked at footwell or F/R bumper area.
Drive on back roads while your chassis is unstable.
Chassis Reboot is the power cycling with batteries disconnected for 15mn. This should give you a break from "XMas tree" for a while unless a module is actively soaked at footwell or F/R bumper area.
Drive on back roads while your chassis is unstable.
Thread Starter
Newbie
Joined: Dec 2024
Posts: 10
Likes: 1
E220 bluetec
Hello all, my 2015 E220 bluetec estate has this morning started with a serious & confusing problem. Whilst driving the blind spot warning lights & messages appeared on the instrument panel along with the lane departure warnings, the SOS was flashing, the indicators stopped working. The Bluetooth etc also stopped working. When I got home & switched it off, all the lights & instrumentation lights etc were flashing & the car would not start. I connected my fault finder up & four faults are showing C067100 & C073700 & C066300 & C066400 !! Please help.
kind regards
Bob
kind regards
Bob
Out Of Control!!
Joined: Apr 2019
Posts: 12,191
Likes: 6,889
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
Thread Starter
Newbie
Joined: Dec 2024
Posts: 10
Likes: 1
E220 bluetec
I don’t know what it looks like nor do I have a part number. I can’t even find where it’s located on the car 😬😬🧐 if I knew where it was then i would remove it & try to fix or replace it. Might have to bite the bullet & contact an auto electrician tomorrow.
Out Of Control!!
Joined: Apr 2019
Posts: 12,191
Likes: 6,889
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
🤞
W212 does not use a BCM per say - Many meanings attached (/Battery /Brakes /Body Ctl Module) functions covered by misc modules.
Last edited by CaliBenzDriver; Dec 11, 2024 at 07:17 PM.
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From: Spain UTC/GMT +2 hours
W213 All-terrain
BCM is the generic name for something like a SAM.
W212 has the CGW fitted into the Front SAM unit so maybe some water can be present near the CGW part, also the Steering Angle Sensor / Panel can trigger those errors.
W212 has the CGW fitted into the Front SAM unit so maybe some water can be present near the CGW part, also the Steering Angle Sensor / Panel can trigger those errors.
Thread Starter
Newbie
Joined: Dec 2024
Posts: 10
Likes: 1
E220 bluetec
Hello all, my 2015 E220 bluetec estate has this morning started with a serious & confusing problem. Whilst driving the blind spot warning lights & messages appeared on the instrument panel along with the lane departure warnings, the SOS was flashing, the indicators stopped working. The Bluetooth etc also stopped working. When I got home & switched it off, all the lights & instrumentation lights etc were flashing & the car would not start. I connected my fault finder up & four faults are showing C067100 & C073700 & C066300 & C066400 !! Please help.
kind regards
Bob
kind regards
Bob
a leak in the top of the windscreen was the cause of all electrical issues, the passenger footwell was full of water & two electrical connections were submerged causing all the problems. Garage sorted it all & re sealed the windscreen, so all is good now !!
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Joined: Jan 2016
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From: In the Shadow of the Tetons
2013 ML350 Bluetec
Thanks for coming back with the resolution to your issue!
These cars are particularly sensitive to water. Somehow, they're also kind of prone to leaks.
Edited to add: Keep an eye on those two electrical connections that were submerged. They might start growing gremlins down the road.
These cars are particularly sensitive to water. Somehow, they're also kind of prone to leaks.
Edited to add: Keep an eye on those two electrical connections that were submerged. They might start growing gremlins down the road.
Last edited by rapidoxidation; Dec 22, 2024 at 07:26 PM.
MBWorld Fanatic!
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From: 122W, 37N
2016 E350 4Matic wagon, 2019 Ford Expedition, 2019 Chevy Bolt EV
hey, windshield water leaks were the death of our 1987 Volvo 240 after 35 years and 500,000 miles... I had it resealed and got it dried out and it was running fine, daughter took it back up to Arcata (Humboldt County coast, where she went to college, and that constant drizzle there killed it, she couldn't take care of it, and it got all moldy and nasty so ended up towed to the scrap yard... I think we got our moneys' worth out of that car.
