ML350 Stuck In Park ISM Issue Maybe?
Thread Starter
Member
Joined: Jun 2004
Posts: 159
Likes: 6
From: BC, Canada
2007 ML350 (M272) 30-509034 & 2008 ML320 CDI
ML350 Stuck In Park ISM Issue Maybe?
Thursday I had to do some running around.
Once I got home I reversed into my driveway, shut off the car and that was it until Friday.
When I hopped into the vehicle Friday afternoon and went to start it, it BARELY turned over but managed to start so I let it sit for a bit and when I went to put it into D I got the dreaded "Do not shift gears, drive to shop" message.
I immediately remembered this happening to me before when I swapped out the AUX battery years ago and all it took was disconnecting everything again and it corrected itself so I thought maybe this was the culprit again.
I had a new AUX battery so I took my battery out, charged it, and put the new AUX battery in along with the fully charged battery but no dice, same issue.
My ML starts NP, shows it is in P on my dash but if I try to put it into R or D I get the same message.
If I open my door it tells me it is in gear,
I went and bought a new AGM battery (it obviously needed one anyway) and installed it today but of course no change.
Scanner shows the 1904 & 1974.
Now I am starting to wonder if I messed up and left the car in Reverse (I am usually so good with putting it in P but my old sick dog was in the back & my mind just might have been elsewhere) and didn't put it into P when I shut it off on Thursday so the ISM thinks and shows it is in P but the transmission is still in R?
You think it is worth to jack up the car, remove the ISM, and manually rotate the gear into P to see if they 'sync'?
Would that work?
I was hoping my Ancel X6 would have the option to put the ISM into N but it can't do that function.
Cheers in advance for the assistance.
Once I got home I reversed into my driveway, shut off the car and that was it until Friday.
When I hopped into the vehicle Friday afternoon and went to start it, it BARELY turned over but managed to start so I let it sit for a bit and when I went to put it into D I got the dreaded "Do not shift gears, drive to shop" message.
I immediately remembered this happening to me before when I swapped out the AUX battery years ago and all it took was disconnecting everything again and it corrected itself so I thought maybe this was the culprit again.
I had a new AUX battery so I took my battery out, charged it, and put the new AUX battery in along with the fully charged battery but no dice, same issue.
My ML starts NP, shows it is in P on my dash but if I try to put it into R or D I get the same message.
If I open my door it tells me it is in gear,
I went and bought a new AGM battery (it obviously needed one anyway) and installed it today but of course no change.
Scanner shows the 1904 & 1974.
Now I am starting to wonder if I messed up and left the car in Reverse (I am usually so good with putting it in P but my old sick dog was in the back & my mind just might have been elsewhere) and didn't put it into P when I shut it off on Thursday so the ISM thinks and shows it is in P but the transmission is still in R?
You think it is worth to jack up the car, remove the ISM, and manually rotate the gear into P to see if they 'sync'?
Would that work?
I was hoping my Ancel X6 would have the option to put the ISM into N but it can't do that function.
Cheers in advance for the assistance.
Last edited by Bobenis; Oct 31, 2023 at 04:04 AM.
MBWorld Fanatic!
Joined: Jun 2002
Posts: 7,266
Likes: 170
From: So. Oregon Coast
C230 Sport Coup + 2006 W164 ML350 + 99 Ford Escort RIP
I used icarsoft to troubleshoot similar problem a while back,
I went through codes, live data every module,
found mulltiple references to the shift module,
ISM and CANBUS. ISM is dealer only, and
canbus fuggetaboutit! Diagnostic would be minimum of $200 so,
I replaced the shifter module for about $200, and it resolved it.
I went through codes, live data every module,
found mulltiple references to the shift module,
ISM and CANBUS. ISM is dealer only, and
canbus fuggetaboutit! Diagnostic would be minimum of $200 so,
I replaced the shifter module for about $200, and it resolved it.
Thread Starter
Member
Joined: Jun 2004
Posts: 159
Likes: 6
From: BC, Canada
2007 ML350 (M272) 30-509034 & 2008 ML320 CDI
OK I have posted my codes just for reference
Kinda tempted to get a Xentry, this one perhaps
https://www.aliexpress.com/item/1005...8daEoQbwS&mp=1
Vehicle Info
Date: 2023-10-27 17:16:59
Vehicle: BENZ V16.9
Path: BENZ > Cars > Automatic selection > Read VIN > Left-hand steering > New
version > Quick Test
Quick Scan
Name Status Describe
REAR SAM-Rear
signal acquisition
and actuation
module
Fault[8] Code number:90BA
Describe:The line from component N10/8
(Rear SAM control unit) (pin F.11) to
component A72 (Rear door locking unit) (pin
1.4) has an open circuit or short circuit to
ground.
Code number:90BE
Describe:The line from component N10/8
(Rear SAM control unit) (pin F.12) to
component A72 (Rear door locking unit) (pin
1.10) has an open circuit or short circuit to
ground.
Code number:90B6
Describe:The line from component N10/8
(Rear SAM control unit) (pin F.13) to
1/
4
component A72 (Rear door locking unit) (pin
1.3) has an open circuit or short circuit to
ground.
Code number:90D2
Describe:Component A72 (Rear door locking
unit) is defective.
Code number:C361
Describe:Event : Local undervoltage at circuit
30 (voltage < 9.5 V)
Code number:912B
Describe:Component E3e3 (Left backup lamp)
or the line to the component has a short
circuit to positive or open circuit.
Code number:91BB
Describe:E17/6 (Right rear door entry/exit
lamp) : Short circuit to positive or open circuit
Code number:C32D
Describe:Event : Control module N121/1
(Rear-end door closing control module) is not
sending any data.
AAC-Automatic
air conditioning
Fault[4] Code number:900E
Describe:Local undervoltage at circuit 30
(voltage < 9 V)
Code number:9403
Describe:M2/12 (Rear shutoff flap positioning
motor) : LIN bus communication error
Code number:9404
Describe:M16/23 (Air flap actuator motor, left
center vent) : LIN bus communication error
Code number:9406
Describe:M2/10 (Left footwell flap actuator) :
LIN bus communication error
ISM-Intelligent
servo module
Fault[2] Code number:1904
Describe:The internal mechanism in
component A80 (Intelligent servo module for
DIRECT SELECT) for engaging selector lever
position P is not in the correct position.
Code number:1974
Describe:Selector lever position "P" was
engaged due to a fault occurring in
component A80 (Intelligent servo module for
DIRECT SELECT) or in the vehicle
communications.
Control unit TELE
AID
Fault[2] Code number[img]data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7[/img]602
Describe:Line to pushbutton switch Roadside
assistance is interrupted.
2/
4
Code number[img]data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7[/img]604
Describe:Line to pushbutton switch MB Info is
interrupted.
TELE AID-
Telematic
services MB
Info,Roadside
assistance(USA,
Canada),Tele
diagnosis(ECE)
Fault[2] Code number[img]data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7[/img]101
Describe:The Telematic service 'Roadside
assistance' is not authorized.
Code number[img]data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7[/img]201
Describe:The Telematic service 'MB Info' is
not authorized.
TPC-Tire pressure
monitor
Fault[1] Code number:9130
Describe:No wheel sensors detected.
WSS-Weight
sensing system
Fault[1] Code number:C001
Describe:Undervoltage
[OBF164] UCP-
Upper control
panel
Fault[1] Code number:9036
Describe:Undervoltage detection .
Undervoltage is not detected until after 5 s
and a voltage of < 9.5 V.
CM-Compass
module
Fault[1] Code number[img]data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7[/img]010
Describe:Undervoltage supply ( less than10,8
V)
AGW-Audio
gateway (MOST
network
management,
diagnosis
gateway, radio
tuner)
Fault[1] Code number[img]data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7[/img]010
Describe:The supply voltage of the control
unit is too low (undervoltage). This fault code
may be ignored if the voltage supplied to the
control module is greater than 11 V.
TELE AID-
Telematic
services Stolen
vehicle tracking
Fault[1] Code number[img]data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7[/img]401
Describe:The Telematic service 'Stolen
vehicle tracking' is not authorized.
[ME97] ME 9.7-
Motor electronics
9.7
OK
Transmission OK
ESP-Electronic
stability program
Fault[2]
AB-Airbag OK
CGW-Central
gateway
OK
[EZS164] EZS-
Electronic
ignition switch
OK
OCP-Overhead
control panel
OK
SAM-F-Signal OK
3/
4
acquisition and
actuation module
front
System
diagnosis(CAN)
OK
IC-Instrument
cluster
OK
SCM [MRM]-
Steering column
module
OK
ASSYST-Active
Service System
OK
[WR164] ASSYST
PLUS-PLUS Active
Service System
OK
[XCDC] CDC-CD
changer
OK
[XHU] AUDIO OK
[XHUJP] COMAND
or AUDIO
OK
[XTV] TV-TV tuner OK
[TV211] TV-TV
tuner(AGW)
OK
SOUND- Sound
system
OK
[XUHI] CTEL-
Mobile phone
adapter with
universal
interface
OK
TELE AID-
Telematic
services
Emergency call
OK
TELE AID-
Telematic
services Remote
door
unlocking,Remot
e door locking
OK
DCM-FL-Door
control module
front left
OK
DCM-FR-Door
control module
front right
OK
Kinda tempted to get a Xentry, this one perhaps
https://www.aliexpress.com/item/1005...8daEoQbwS&mp=1
Vehicle Info
Date: 2023-10-27 17:16:59
Vehicle: BENZ V16.9
Path: BENZ > Cars > Automatic selection > Read VIN > Left-hand steering > New
version > Quick Test
Quick Scan
Name Status Describe
REAR SAM-Rear
signal acquisition
and actuation
module
Fault[8] Code number:90BA
Describe:The line from component N10/8
(Rear SAM control unit) (pin F.11) to
component A72 (Rear door locking unit) (pin
1.4) has an open circuit or short circuit to
ground.
Code number:90BE
Describe:The line from component N10/8
(Rear SAM control unit) (pin F.12) to
component A72 (Rear door locking unit) (pin
1.10) has an open circuit or short circuit to
ground.
Code number:90B6
Describe:The line from component N10/8
(Rear SAM control unit) (pin F.13) to
1/
4
component A72 (Rear door locking unit) (pin
1.3) has an open circuit or short circuit to
ground.
Code number:90D2
Describe:Component A72 (Rear door locking
unit) is defective.
Code number:C361
Describe:Event : Local undervoltage at circuit
30 (voltage < 9.5 V)
Code number:912B
Describe:Component E3e3 (Left backup lamp)
or the line to the component has a short
circuit to positive or open circuit.
Code number:91BB
Describe:E17/6 (Right rear door entry/exit
lamp) : Short circuit to positive or open circuit
Code number:C32D
Describe:Event : Control module N121/1
(Rear-end door closing control module) is not
sending any data.
AAC-Automatic
air conditioning
Fault[4] Code number:900E
Describe:Local undervoltage at circuit 30
(voltage < 9 V)
Code number:9403
Describe:M2/12 (Rear shutoff flap positioning
motor) : LIN bus communication error
Code number:9404
Describe:M16/23 (Air flap actuator motor, left
center vent) : LIN bus communication error
Code number:9406
Describe:M2/10 (Left footwell flap actuator) :
LIN bus communication error
ISM-Intelligent
servo module
Fault[2] Code number:1904
Describe:The internal mechanism in
component A80 (Intelligent servo module for
DIRECT SELECT) for engaging selector lever
position P is not in the correct position.
Code number:1974
Describe:Selector lever position "P" was
engaged due to a fault occurring in
component A80 (Intelligent servo module for
DIRECT SELECT) or in the vehicle
communications.
Control unit TELE
AID
Fault[2] Code number[img]data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7[/img]602
Describe:Line to pushbutton switch Roadside
assistance is interrupted.
2/
4
Code number[img]data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7[/img]604
Describe:Line to pushbutton switch MB Info is
interrupted.
TELE AID-
Telematic
services MB
Info,Roadside
assistance(USA,
Canada),Tele
diagnosis(ECE)
Fault[2] Code number[img]data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7[/img]101
Describe:The Telematic service 'Roadside
assistance' is not authorized.
Code number[img]data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7[/img]201
Describe:The Telematic service 'MB Info' is
not authorized.
TPC-Tire pressure
monitor
Fault[1] Code number:9130
Describe:No wheel sensors detected.
WSS-Weight
sensing system
Fault[1] Code number:C001
Describe:Undervoltage
[OBF164] UCP-
Upper control
panel
Fault[1] Code number:9036
Describe:Undervoltage detection .
Undervoltage is not detected until after 5 s
and a voltage of < 9.5 V.
CM-Compass
module
Fault[1] Code number[img]data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7[/img]010
Describe:Undervoltage supply ( less than10,8
V)
AGW-Audio
gateway (MOST
network
management,
diagnosis
gateway, radio
tuner)
Fault[1] Code number[img]data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7[/img]010
Describe:The supply voltage of the control
unit is too low (undervoltage). This fault code
may be ignored if the voltage supplied to the
control module is greater than 11 V.
TELE AID-
Telematic
services Stolen
vehicle tracking
Fault[1] Code number[img]data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7[/img]401
Describe:The Telematic service 'Stolen
vehicle tracking' is not authorized.
[ME97] ME 9.7-
Motor electronics
9.7
OK
Transmission OK
ESP-Electronic
stability program
Fault[2]
AB-Airbag OK
CGW-Central
gateway
OK
[EZS164] EZS-
Electronic
ignition switch
OK
OCP-Overhead
control panel
OK
SAM-F-Signal OK
3/
4
acquisition and
actuation module
front
System
diagnosis(CAN)
OK
IC-Instrument
cluster
OK
SCM [MRM]-
Steering column
module
OK
ASSYST-Active
Service System
OK
[WR164] ASSYST
PLUS-PLUS Active
Service System
OK
[XCDC] CDC-CD
changer
OK
[XHU] AUDIO OK
[XHUJP] COMAND
or AUDIO
OK
[XTV] TV-TV tuner OK
[TV211] TV-TV
tuner(AGW)
OK
SOUND- Sound
system
OK
[XUHI] CTEL-
Mobile phone
adapter with
universal
interface
OK
TELE AID-
Telematic
services
Emergency call
OK
TELE AID-
Telematic
services Remote
door
unlocking,Remot
e door locking
OK
DCM-FL-Door
control module
front left
OK
DCM-FR-Door
control module
front right
OK
