Vehicle Does Not Start (LI54.00-P-067822)

WARNING: This page is about the Fortwo Electric Drive, 2D Convertible, which is a different variant/trim than selected.

Publication date: 2018-03-09
Reference number: LI54.00-P-067822

VEHICLE DOES NOT START

TECHNICAL SERVICE BULLETIN

Reference Number(s): LI54.00-P-067822 Version 1, Date of Issue: March 09, 2018

SMART:	smart electric drive
FUNCTION GROUP:	54.00 General

Vehicle does not start, 12 V battery sufficiently charged.

HV fault message (see attachment) in instrument cluster.

After bus idle, the fault is no longer reproducible.

The FC P082062 / P082019 is logged in the power electronics CU N129/1.

File	Description
Bild vom Ki e smart.jpg	IC warning message 1
Bild vom Ki e.jpg	IC warning message 2

Possible software error in power electronics CU N129/1.

Follow the XENTRY instructions for the fault code (perform resistance measurement on excitation winding/ insulation test).

If the measured resistance is outside the specified range, replace the electric motor.
If the measured resistance is within the specified range, visually inspect the threaded connection (picture in attachment).
If no faults are found, erase the fault memory, do not replace any parts, and release the vehicle to the customer.

NOTE: Software updates are under development to help improve this remedy.

ATTACHMENTS

File	Description
Prufung Bilder.pdf	Pictures of test

Control unit	Fault code	Fault text
N129/1 - Power electronics (SG-EM) (INVERTER453)	P082062	The connection of the excitation winding at the component 'A79/1 (Electric machine)' has a malfunction. The signal comparison is faulty.
N129/1 - Power electronics (SG-EM) (INVERTER453)	P082019	The connection of the excitation winding at the component 'A79/1 (Electric machine)' has a malfunction. The limit value for current has been exceeded.