Renault Megane Quiz
Chassis

Component replacement

In this manual: Chassis
Engine and peripherals — 141Chassis — 79Chassis — 72Renault Mégane III Driver's Manual — 87Electrical equipment — 221Engine and peripherals — 47Electrical equipment — 80Transmission — 14Air conditioning — 30Bodywork — 115Trim and upholstery — 44General vehicle information — 27Air conditioning — 59General vehicle information — 16Transmission — 38Sealing and soundproofing — 7General vehicle information — 3
~1min read

CONTROL UNIT REPLACEMENT:

When replacing the ECU, carry out the following configurations:

  • Configuring the "speedometer index":
The BOSCH ESP 8.0 control unit with "speedometer function" supplies the vehicle speed signal to all users of this information in the vehicle (instrument panel, engine management, etc.).

This vehicle speed signal replaces the one supplied by the speed sensor located on the gearbox.

The ESP (dynamic driving control) control unit calculates the vehicle speed from the wheel speeds and the rolling circumference of the tyres fitted to the vehicle.

Note: The vehicle speed is supplied by hard wire (pin 33) to the Xenon lamp control unit (COSLAD), to the radio and to the electric sunroof, and over the multiplexed network to the other control units.

The tyre rolling radius must be programmed into the memory of a new ECU. This consists of entering an index "X" using the diagnostic tool with the command VP007 "Odometer index".

After entering the index using command VP007, erase the control unit memory, then switch off the ignition.

Using parameter PR030, check that the entered index has been taken into account.

  • Vehicle parameters (engine torque index configuration + braking definition):

Select command VP004 on the diagnostic tool. (Make sure the selected variants exactly match the vehicle's equipment.)

Test yourself

A quick Renault Megane quiz: every answer comes with an explanation and a link to the manual page.