LI54-18-P-069309

Fault message "SRS - Service Required" displayed in instrument cluster and SRS lamp active
Topic number
LI54.18-P-069309
Version
3
Function group
54.18 Cable harnesses
Date
02-19-2019
Validity
Model series 177, model series 118, model series 247,
model series 167
Reason for change
Model series validity adapted
Reason for block
Complaint:
Fault message "SRS - Service Required" is displayed in the instrument cluster and the SRS lamp is active.
Attachments
File
Description
AirbagModul.JPG
Production-related tool locating marks.
Cause:
The fault entry could have been caused by occasional transition resistance at contacts.
Remedy:
1. Disconnect (detach) the 104-pin coupling to the airbag control unit (N2/10, plug 1) then connect again.
2. Check the strain-relief clamp on the control unit contact, adapt to match specification, if necessary.
Please do not replace any parts.
Reoccurrence of the complaint:
If the fault occurs again, or if this is a reoccurrence of the same complaint, a PTSS case must be created and informative photos of the work performed (overview of the feed line to the airbag control unit) must be attached to the case.
Note:
Some vehicles may have marks on the insulation of the electrical line at the K/Z airbag module, which are production-related tool locating marks.
The locating marks have no influence on the functioning. (See attachment)
Attachments
File
Description
Anleitung SRS.pdf
Change to feed line for SRS control unit
Symptoms
Body / Safety system / Airbag/Supplemental restraint system SRS / Indicator lamp / SRS indicator lamp / lit
Body / Safety system / Airbag/Supplemental restraint system SRS / SRS and AKSE / Shows malfunction
Body / Safety system / Airbag/Supplemental restraint system SRS / Indicator lamp / Airbag / lit
02-19-2019 4:03 PM
© Copyright Daimler AG
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Control unit/fault code
Control unit
Fault code
Fault text
N2/10 - Supplemental restraint B000113
system (SRS) (ORC177)
The squib for the driver airbag (stage 1) has a malfunction. There
is an open circuit.
N2/10 - Supplemental restraint B001313
system (SRS) (ORC177)
The squib for the front passenger kneebag has a malfunction.
There is an open circuit.
N2/10 - Supplemental restraint B280713
system (SRS) (ORC177)
The squib for refrigerant accident safeguard 2 has a malfunction.
There is an open circuit.
N2/10 - Supplemental restraint B00E313
system (SRS) (ORC177)
The squib for the left rear emergency tensioning retractor has a
malfunction. There is an open circuit.
N2/10 - Supplemental restraint B003813
system (SRS) (ORC177)
The squib for the right rear sidebag has a malfunction. There is
an open circuit.
N2/10 - Supplemental restraint B002213
system (SRS) (ORC177)
The squib for the left rear windowbag has a malfunction. There is
an open circuit.
N2/10 - Supplemental restraint B000413
system (SRS) (ORC177)
The squib for the driver kneebag has a malfunction. There is an
open circuit.
N2/10 - Supplemental restraint B273113
system (SRS) (ORC177)
The squib for the right rear engine hood lifter has a malfunction.
There is an open circuit.
N2/10 - Supplemental restraint B002113
system (SRS) (ORC177)
The squib for the left windowbag/headbag has a malfunction.
There is an open circuit.
N2/10 - Supplemental restraint B275013
system (SRS) (ORC177)
The squib for the sidebag 'Driver' has a malfunction. There is an
open circuit.
N2/10 - Supplemental restraint B001013
system (SRS) (ORC177)
The squib for the front passenger airbag (stage 1) has a malfunction. There is an open circuit.
N2/10 - Supplemental restraint B007E13
system (SRS) (ORC177)
The squib for emergency tensioning retractor 'Driver' has a malfunction. There is an open circuit.
N2/10 - Supplemental restraint B002913
system (SRS) (ORC177)
The squib for the right windowbag/headbag has a malfunction.
There is an open circuit.
N2/10 - Supplemental restraint B275113
system (SRS) (ORC177)
The squib for the sidebag 'Front passenger' has a malfunction.
There is an open circuit.
N2/10 - Supplemental restraint B273513
system (SRS) (ORC177)
The squib for pyrofuse 'On-board electrical network line' has a
malfunction. There is an open circuit.
N2/10 - Supplemental restraint B001113
system (SRS) (ORC177)
The squib for the front passenger airbag (stage 2) has a malfunction. There is an open circuit.
N2/10 - Supplemental restraint B280613
system (SRS) (ORC177)
The squib for refrigerant accident safeguard 1 has a malfunction.
There is an open circuit.
N2/10 - Supplemental restraint B002A13
system (SRS) (ORC177)
The squib for the right rear windowbag has a malfunction. There
is an open circuit.
N2/10 - Supplemental restraint B000213
system (SRS) (ORC177)
The squib for the driver airbag (stage 2) has a malfunction. There
is an open circuit.
N2/10 - Supplemental restraint B007F13
system (SRS) (ORC177)
The squib for emergency tensioning retractor 'Front passenger'
has a malfunction. There is an open circuit.
N2/10 - Supplemental restraint B003013
system (SRS) (ORC177)
The squib for the left rear sidebag has a malfunction. There is an
open circuit.
N2/10 - Supplemental restraint B00E413
system (SRS) (ORC177)
The squib for the right rear emergency tensioning retractor has a
malfunction. There is an open circuit.
02-19-2019 4:03 PM
© Copyright Daimler AG
WASHING
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N2/10 - Supplemental restraint B273013
system (SRS) (ORC177)
The squib for the left rear engine hood lifter has a malfunction.
There is an open circuit.
Operation numbers/damage codes
Op. no.
Operation text
Time
Damage
code
Note
82485 73
SRS airbag control unit, seat belt
tensioner
Attachments
AirbagModul.JPG:
02-19-2019 4:03 PM
© Copyright Daimler AG
WASHING
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Current Verbaustatus
Wrapping Airbag SG u Cable Ties all MFA2 LL and RL
 All wraps should be wrapped between 1mm/ 5mm under the cable tie.
 cable ties
cable ties
New Construction Execution
All BR LL and RL on the N2 / 5 control unit Airbag Full

Wrapping ends 30mm before the start of the housing as
shown in (Fig. 1)

Cable tie ( used for cable guidence.)
cable ties