Annabanana100

2006 ML 350 164 (272.967) Had lots of electrical codes from battery dying till it was replaced. The shop charged the new battery fully. After putting in new battery, cleared codes and now have ZERO codes but car still won't start! Cranks but no start.
Modus Ultra scanner. Help!

Maj. Dundee

So is it correct that your car is at the shop?

That Modis scanner is expensive. Did you/shop scan for codes in all modules? It's very strange that there are no codes for a crank/no start.

Annabanana100

No, the car is at home. Yes we scanned all. correction: there was 1 code. Needed to relearn the sunroof. Did it and then 0 codes. We own the scanner. Hubby and son put new battery in, following correct procedure for removing and installing new battery. The battery kept losing power. So we believe that is what threw all the crazy electrical codes we saw. Put in new battery, and that one started being drained. Took it back, store said battery only at 50% charge. Got new one. Car still wouldn't start. Decided to clear all codes after new battery in, and to my amazement, all codes gone! Except car still won't start! Ran the scanner TWICE, with the same results. Any ideas Major?

E55Greasemonkey

Crank no start, you're missing fuel, spark or compression.

Stevebfl

I too am new so I apologize if this is the incorrect reply format. As to your car, just as your actions wiped the sunroof initialization you have also probably wiped the ISM initialization. I believe that to be the shift module acronym. It needs to be relearned. Without it the ECM won’t know what gear you are in. As all automatics it won’t start in a drive position so it has to know where it is.

Stevebfl

sorry, I forgot that you said it cranked. But you still should do the relearned associated with the ISM and transmission there is also a relearn for starting that controls the fuel pump. If that doesn’t do check to see if there are relearn processes in the ME module (ECM). The throttle may also need relearning. It probably does but it will usually run without initialization, it will only idle.

Annabanana100

On the relearning, the scanner told me what needed to be relearned. My scanner doesn't show the ISM module needing to be relearned? Wouldn't it show me a code for that plus walk me thru the process on my scanner like it did for the sunroof? Which incidentally, that same code (sunroof) shows this morning as still needing to be relearned.... scanned again this am and that sunroof code is back....

Maj. Dundee

Why didn't you document all of those codes?

Was one of them Crankshaft Hall Sensor?

Annabanana100

Saved on Modis. Engine: 0845 transmission: 061B
intelligent Servo Module: 1904,1974 SAM front: 900E,9043,9045,904C,904E SAM rear: 9133,9153,
C361,C325,9096,914F, 9143 door control module front left: 9002 door control module front right:9002
overhead control panel:9005,9010,9600,9708
rear control panel: 9021,9030 steering control module: 9346,9010 air conditioning: 900E, 9702
upper control panel:9027,9021,9038,9036 weight sensing system:C001

Maj. Dundee

Please retype the codes according to module.

Eng.xxxx

Trans. xxxx

And so on.

Annabanana100

Engine: 0845
transmission: 061B
Intelligent Servo Module: 1904,1974
SAM front: 900E, 9043,9045,904C 904E
SAM Rear: 9133,9153,C361,C325,9096,914F,9143
Door control module: front left 9002
Door control module front right 9002
Overhead Control Panel: 9005,9010,9600,9708,
Rear Control Panel: 9021,9030
Steering Column Module: 9346,9010,
Air conditioning: 900E,9702
Upper Control Panel: 9027,9021,9038,9036
Weight sensing system: C001

Maj. Dundee

Give me some time to research this.

Annabanana100

Thank you Major! 👍👍👍

Maj. Dundee

Anna, did you have any problems with the car prior to the battery dyeing?

Annabanana100

No, pretty much acted fine. Drove well.

Maj. Dundee

When the battery goes below 10v, many codes will be stored.

Do you know to delete all these codes? After you do, turn the key off and wait 3 min. before you check for codes again.

Also Perform Basic Programing.

Annabanana100

Yes I have deleted all the codes before. I waited 3 minutes and scanned again. The exact same info as before. Clear of all codes except sunroof not normalized. Ran the list of basic programming but car still did not start. Note. Because the battery is being drained if we leave it hooked up to car, we disconnect the battery when we are not trying to get the car started. After we hook the battery back up, we wait 15 minutes before doing anything to give the modules time to wake up.... thank you

Stevebfl

you can’t keep disconnecting the battery. Every time you do you take a chance of scrambling some more programming. You need to enter the trans module and look to relearning functions, they will be under adaptations or a similar group. Your scanner may not be capable of doing what you need. You definitely will not be able to program, but you should be able to relearn or adapt. BTW, there are two batteries in that ML. The second is under the seat if I recall and is much smaller. I believe it is responsible for the ISM.

the ability to read and clear codes is valuable to diagnostics, but can’t repair anything. You need to quit disconnecting the battery. If it can’t keep a charge you have other problems. Do you have a trusted independent repair shop? One that has a genuine MB Xentry. You are going to need help from a specialist. He won’t be a specialist unless he has the proper tools. Good luck!

Annabanana100

Fuel pump? It was replaced 14 months ago. Hubby says it's acting like it did ( cranked, wouldn't start) when we had to replace it 14 months ago.... thoughts?

Maj. Dundee

Yes it could be, but that problem would not cause a battery drain,

You must test for Parasitic Draw . Would you know how to do it?

Annabanana100

News. Did a relearning on transmission and ECU. I got the car to start for 10 minutes or so, then I turned the car off and cranked, no start. Pumped the gas and it started and them died like out of fuel. Now think it's the fuel pump (1 year old) fuel regulator or fuel lines. In addition we have the parasitic battery drain. Do you have any links in testing for battery drain? Thanks!

Maj. Dundee

Who replaced the fuel pump?

What brand was it, what did it cost?

Annabanana100

It was AAMCO. We had it changed in California AAMCO, then year later in Houston AAMCO. They did not tell us the brand. I'm sure it was a generic brand. It is out of warranty. $650 or so including labor.

Maj. Dundee

Could you check if your scanner can read codes on fuel pumps?

Annabanana100

The Modus does have capability to do functional tests on fuel pump and pump relay. However, we don't have the accessories needed to do that; plus I believe the engine has to be running...But now my codes are at "no codes." Even when I had the 30 or so codes, none of them were related to fuel codes or ignition codes at all....
Right now my new battery is less than fully charged, I am recharging it with a battery pack. When it gets to the 12.50, I will do the parasitic battery drain check. Any other ideas? Thank you Major....