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Ask Lou P. master tech Your Own Question
Lou P. master tech
Lou P. master tech, Mercedes Technician
Category: Mercedes
Satisfied Customers: 4257
Experience:  15 years master certified 100% fix rate and have access to factory radio codes, wiring, and instructions.
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My 2007 MB ML350 dash lights/ WARNING LAMPS ..BAT/ABS/ TRAC/BRAKE/LOW

Customer Question

My 2007 MB ML350 dash lights/ WARNING LAMPS ..BAT/ABS/ TRAC/BRAKE/LOW TIRE/ECT ALL AND MILAGE AND TRANS INDICATOR SHOWS.. are blinking every eight seconds.NEW BATTERY/AND AUX. HAVE ACCESS TO LUANCH SCANER. HELP
Submitted: 1 year ago.
Category: Mercedes
Expert:  Lou P. master tech replied 1 year ago.
Hello, does the ML start and run? what happened before these warnings occured?
Customer: replied 1 year ago.
runs fine. no warring lights on when running / was towed in with dead battery. replaced battery/ bolth.. tried battery reset/ (poss.neg cables together) will drain battery if sits for a few days
Customer: replied 1 year ago.
note these light are blinking with key off and out of vehicle
Customer: replied 1 year ago.
(Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Expert:  Lou P. master tech replied 1 year ago.
oh wow, that is very unusual, so first thing i recommend, access the battery, which you have done, there is a control module right there called a front sam, it has a lot of plugs facing straight up. unplug the module and see if the lights go off and if there is water or corrosion in the control module connections.
Customer: replied 1 year ago.
just unplugged aux battery ground feed at neg battery post (brown wire on spade connecter) to get wire out of way and noticed all warning lights stop flashing and every thing is back to normal. started vehicle aux. bat warning on dash as it should be. will still unplug front sam and inspect connectors,,
Expert:  Lou P. master tech replied 1 year ago.
Yes, check the sam, the aux battery is only tied strictly to the ism . and the eis. that is it.
Customer: replied 1 year ago.
ism? eis?
Customer: replied 1 year ago.
eis (elect ignt switch) all plugs are dry and look good..
Customer: replied 1 year ago.
intellagent servo module
Customer: replied 1 year ago.
so either trans mod or ignition switch ?
Customer: replied 1 year ago.
on one ocasion would no go in reverse. about 2 months ago and notice steerig wheel lock does not engadge when key removed/ (that clunk noise when you take the key out) may need both
Expert:  Lou P. master tech replied 1 year ago.
ism is intelligent servo module yes, eis is electronic ignition switch yes, did you check sam? what fault codes are in the system?
Customer: replied 1 year ago.
900d/ marker lamp 9043 crt 30 undr volt/ stored9045 crct 30 /2 under voltage 904c ctrl mod a1 no data904e ctrl mod n93 cgm no data all are stored codes
Expert:  Lou P. master tech replied 1 year ago.
Ok, n93 and a1, what is a1?? n93 is important, that is the gateway between the can data bus
Customer: replied 1 year ago.
inst cluster
Expert:  Lou P. master tech replied 1 year ago.
ok that is what i thought, erase codes, start and run car , shut off, start and run do this about 3 times and re read codes.
Customer: replied 1 year ago.
ok
Expert:  Lou P. master tech replied 1 year ago.
I have to drive home, i will check back later, maybe we should do a phone chat as well. think about it let me know.
Customer: replied 1 year ago.
ok just call me on my cel(###) ###-####ron I cleared the the sam and working ok at this time will retun though ive done this before...
Customer: replied 1 year ago.
update no codes returned to front sam/ but ran codes for ism found code P179D00 redundancy system for direct connect was activated... I have no info on this lights flash when code is set / clear code and lights stop flashing.. it will last one to three key cycles hard code returns every time.. 177 k on vehicle did have complete trans done at mb dealer 3 maybe 4 years ago...
Expert:  Lou P. master tech replied 1 year ago.
Hello, sorry for the delay.im gonna see if i can get some info on that code. but what about the other lights? are all the other warnings gone so far?
Expert:  Lou P. master tech replied 1 year ago.
ok i cant get any info on that code i will have to opt out. please do not respond until another expert responds first or else it will lock you back to me.