CARS
Date: 16.06.2021

Model: All Toyota powertrain vehicles
from 2004 Onwards

Number: 2021/06

Copy files should be maintained by:
Service Manager

Service Reception

Lotus Technicians

Parts Manager

[Text here].
TITLE:
Standard information required and procedures to be followed when reporting ECU & TCU faults.
[Next para spacing]

REASON:
Yours
sincerely
/ Kind
(Delete
as appropriate)
There
is often
insufficient,
or regards,
inconsistent
information
received from dealers when reporting ECU & TCU
related faults, this can lead to unacceptable delays in repairing vehicles.

Action A: Example of standard information required on the subject header line on the initial email sent
to Lotus Cars:
Full 17-digit VIN of Vehicle:
SCCLMDVN1HHA2XXXX
Model Year: 2019
Model: Evora
Type: 430
Transmission (AT/MT):
AT
Fault Code/Description of Issue: P0101 Mass or Volume Air Flow Circuit Range/Performance
Vehicle Mileage or KM:
12,284 ml
Dealer Name:
Lotus of XXX
One single email thread with the above header format, should be kept for all communications regarding
an issue until it is resolved, this ensures one email contains the complete information, timeline & history
for all communications concerning the issue.
Action B: Using Lotus 20/20 diagnostic tool, always save the files listed below and include them in your
initial email when contacting your nominated Field Service Engineer (see action A).
If a vehicle has set a DTC or MIL light, DO NOT CLEAR THE FAULT CODES BEFORE SAVING
THESE FILES. Clearing the codes will erase this data and useful information regarding the fault will
have been lost. THIS COULD RESULT IN LOTUS CARS NOT HAVING SUFFICIENT INFORMATION
TO HELP YOU DIAGNOSE THE DTC FAULTS REPORTED!
If available the required .pdf files are:
Freeze Frame data .pdf
ECU
DTC’s .pdf
ECU DTC's & TCU DTC's
Information .pdf
ECU Info & TCU Info
TCU Performance Data .pdf
ECU & TCU
Note: Never send screen shots of this information.
Continued..

CLASS 4

ACTION:
To resolve
inconsistencies, from the issue of this bulletin, when reporting ECU & TCU faults to the
[Name]these
– [Title]
Aftersales
department,
Field Service Engineers require the following:
LOTUS CARS LIMITED
T +44 (0)1953
[######]
M +44 (0)[####
######]
A. Standard
information
to be included
in the email
subject header line.
[name]@lotuscars.com
B. Basic information/files from Lotus 20/20 to be included in the initial email.

Bulletin number 2021/06
continued Page 2

CARS

Sample Email
Shown below is the format of the email that should be sent to your nominated Field Service Engineer
after actions A & B have been carried out.
The Dealers Nominated Field Service Engineer

[Text here].
[Next para spacing]
FW:SCCLMDVN1HHA2XXXX, 2019 Evora 430 AT, P0101 Mass or Volume

Yours sincerely / Kind
regards,
(Delete
as appropriate) 12,284 mi, Lotus of XXX
Air Flow
Circuit
Range/Performance,

Hello,
We require assistance regarding a P0101 Mass or Volume Air Flow Circuit Range/Performance fault code issue on the above vehicle.

T +44
(0)1953
[######]of M
(0)[#### ######]
Dealer
Technical
Description
the+44
Issue:
• A[name]@lotuscars.com
more technical description of the issue
o e.g. This is the second time this vehicle has presented with a P0101 DTC set, after downloading all the require files, we’ve cleared the fault codes and have test driven the vehicle a number of times, however
we are unable reproduce the fault set by the customer?
• What does the vehicle drive like
o e.g. The vehicle drives as normal, unable to detect an issue.
• Any checks and testing carried out to date + What are the results
o e.g. 1st checked the inlet system is stock and in good condition – Inlet system stock, air filter replaced at
last P0101 event.
o e.g. Then carried out visual checked of MAF sensor – All seems OK, no contamination of sensor etc.
o etc. etc. (the more detailed and accurate the information provided the better).
Please find attached required Lotus 20-20 files:
• Freeze Frame .pdf (for ECU)
• DTC .pdf's (for ECU & TCU)
• ECU Info .pdf's (for ECU & TCU)
• Performance Data Information .pdf's (for ECU & TCU)
• ECU Info .pdf's (for ECU & TCU)
As requested by the Field Service Engineer, we have also carried out the Basic Ignition On and Hot Idle
tests, logging the required Basic Channels, please find attached 20/20 live data log files:
• 20200625_Log01_Ignition_On.csv
• 20200625_Log02_Hot_Idle.csv
Any other relevant info / documentation / photo’s etc.
• Please find attached
Regards,
Technician name

After receiving this information, your Field Service Engineer will contact you with instructions on what
to do next, to help resolve the issue.
CHARGES:
No warranty charges are associated with the contents of this bulletin.
Ends.

CLASS 4

[Name]Description
– [Title] of fault:
Customer
LOTUS
LIMITED
• e.g.
VehicleCARS
driving OK,
cruising along the freeway at 55 – 65 mph when the MIL light came on.