Fuel level sensor fault code P046100 | P046109 |
P206600 | P206609 | P13E600 in the FSCM_GEN 4 / 5 / 6
Topic number

LI47.50-P-078804

Version

2

Function group

47.50 - Sender, feeler, sensors

Date

2/21/25

Validity

(N118) FSCM_GEN 4/5/6

Reason for change

Supplement WIS documents

Reason for block

New version is being compiled

Complaint
Customer-perceived problem:
•
•

Fuel gauge reading implausible
MIL ON (market-dependent)

N118/3
Fault codes in control units FSCM_GEN4/5/6
•
For these fault codes, the tests contained in XENTRY must be carried out
P046109 / P206609 / P13E600
•
For these fault codes, the connector couplings/wiring harness routing must be checked for damage
P206600 / P046100

Cause
Various

Remedy
Carry out XENTRY tests for the listed fault codes in the FSCM (N118) and document the monitor graphics for the primary/secondary lever-type sensors.
For additional information, see attachments

Attachments
File

Description

Prim_Sec_Testing Routine_EN.JPG

21.02.2025 17:27
© Copyright Mercedes-Benz AG

CCUSHWA

Page 1 / 4

WIS-References
Document number

Title

Note

AR47.10-P-4001OLC

Empty/fill fuel tank

Example for model series
213/257/238

WS47.00-P-0080B

000 588 04 71 00 Pump

All engines (GW, light vans, cars,
heavy vans, smart) Purpose: Transfer pump for transferring spark-ignition
engine fuel and diesel fuel during repair and servicing work.

WS47.00-P-0084B

000 588 05 71 00 Pump

Catalog of criteria for W 000 588 05
71 00 Pump, form

OF47.00-P-0002-01B

All types (GW, light vans, cars, heavy Catalog of criteria for W 000 588 05
vans, smart)
71 00 Pump, form

Disclaimer

NOTE: The information contained in this document is intended for use by trained, professional technicians with the
knowledge to properly and safely perform diagnosis and repairs on Mercedes-Benz vehicles, using Mercedes-Benz
approved tools and equipment. It informs service technicians about conditions that could occur in certain vehicles and
provides information that could assist in proper vehicle diagnosis, service, or repair. It does not indicate that a defect
is present in any vehicle referenced in this document nor does it imply warranty coverage. DO NOT assume that a
symptom or condition, or a described cause of a symptom or condition, affects any particular vehicle or groups of vehicles, or that a described repair applies to any particular vehicle or groups of vehicles. There can be multiple causes
resulting in the same or similar symptoms or conditions described in this document, and trained professional service
technicians must use their diagnostic skills to make evaluations on a case-by-case basis. The information contained
in this document does not guarantee warranty coverage nor does it extend the vehicle’s warranty in any way.

Symptoms
Power generation > Fuel system > Fuel tank > Function > Different level
Power generation > Engine management > Indicator lamp > Engine diagnosis > lit
Power generation > Fuel system > Indicator lamp > Fuel reserve lamp > lit
Power generation > Fuel system > Indicator lamp > Fuel reserve lamp > Malfunction
Power generation > Fuel system > Fuel tank > Function > Empty too quickly

Control unit/fault code
Control unit

Fault text

N118 - Control unit 'Fuel pump' (FSCU09) (FSCM_GEN5) P13E600 - The suction jet pump has a malfunction. _
21.02.2025 17:27
© Copyright Mercedes-Benz AG

CCUSHWA

Page 2 / 4

N118 - Control unit 'Fuel pump' (FSCU09) (FSCM_GEN5) P206800 - The component 'Secondary fill level sensor'
has a short circuit to positive.
P206700 - The component 'Secondary fill level sensor'
has a short circuit to ground
P046300 - The component 'Primary fill level sensor' has a
short circuit to positive.
P046200 - The component 'Primary fill level sensor' has a
short circuit to ground
N118/3 - Control unit 'Fuel pump' (FSCU10)
(FSCM_GEN6)

P046300 - The component 'Primary fill level sensor' has a
short circuit to positive.
P046200 - The component 'Primary fill level sensor' has a
short circuit to ground
P206800 - The component 'Secondary fill level sensor'
has a short circuit to positive.
P206700 - The component 'Secondary fill level sensor'
has a short circuit to ground
P046109 - The component 'Primary fill level sensor' has a
malfunction. There is a component fault.
P046100 - The component 'Primary fill level sensor' has a
malfunction.
P206609 - The component 'Secondary fill level sensor'
has a malfunction. There is a component fault.
P206600 - The component 'Secondary fill level sensor'
has a malfunction.

N118 - Control unit 'Fuel pump' (FSCU08) (FSCM_GEN4) P046400 - The component 'Primary fill level sensor' has a
short circuit to positive.
P046300 - The component 'Primary fill level sensor' has a
short circuit to positive.
P046200 - The component 'Primary fill level sensor' has a
short circuit to ground
P206900 - The component 'Secondary fill level sensor'
has a sporadic malfunction.
P206800 - The component 'Secondary fill level sensor'
has a short circuit to positive.
P206700 - The component 'Secondary fill level sensor'
has a short circuit to ground
P046109 - The component 'Primary fill level sensor' has a
malfunction. There is a component fault.
P046100 - The component 'Primary fill level sensor' has a
malfunction.

21.02.2025 17:27
© Copyright Mercedes-Benz AG

CCUSHWA

Page 3 / 4

P206609 - The component 'Secondary fill level sensor'
has a malfunction. There is a component fault.
P206600 - The component 'Secondary fill level sensor'
has a malfunction.
N118 - Control unit 'Fuel pump' (FSCU09) (FSCM_GEN5) P046109 - The component 'Primary fill level sensor' has a
malfunction. There is a component fault.
P046100 - The component 'Primary fill level sensor' has a
malfunction.
P206609 - The component 'Secondary fill level sensor'
has a malfunction. There is a component fault.
P206600 - The component 'Secondary fill level sensor'
has a malfunction.

Operation numbers/damage codes
Op. no.

Operation text

21.02.2025 17:27
© Copyright Mercedes-Benz AG

Time

CCUSHWA

Damage
code

Note

Page 4 / 4