Skip to content
MotorFiable

Renault Fluence (2009–2016)Gearbox and clutchUrgency: Garage soon

Automatic gearbox fault warning in the Renault Fluence: causes

In the Renault Fluence, 3 documented faults may be the cause: EDC gearbox overheating and safety neutral, control electronics fault: "check gearbox" warning and loss of gears and oil leak from the EDC output shaft seal, all on the EDC gearbox.[1][3]

What to do now

Garage soon

Stop the car somewhere safe. Sometimes the warning disappears when you switch off and on again, but the fault stays logged: have it diagnosed before it gets worse.

What it means

On automatic and dual-clutch gearboxes, the warning can show up as a dedicated warning light, as a flashing gear indicator or as a message on the dashboard. It is often accompanied by a limp mode with only a few gears available.

General explanation. Gearbox warning: faults that cause it in all cars

6 sourcesHow we work

Engine and gearbox faults that cause it in the Fluence

Only those that affect the versions and years this car was fitted with. Below each title, how the symptom shows up in that fault.

How much it can cost

Depending on the cause, repair at an independent garage ranges from €2,100[1][2] (EDC gearbox overheating and safety neutral) to €2,100[1][2] (EDC gearbox overheating and safety neutral), including VAT. Before replacing parts, get a diagnosis: with a warning light on, the fault code usually points to the cause.

Most serious fault among the possible causes: High severity

Other common causes: gearbox warning

In addition to the documented faults of the Renault Fluence, these are the most common causes in any car according to the sources.

  • Degraded ATF oil or insufficient level[4][5]Common
  • Clogged valve body (mechatronic unit)[5]Common
  • Electrohydraulic unit or synchronisation fault[4]Possible
  • Low battery voltage[4]Possible
  • Leak or lack of pressure in the hydraulic circuit[4]Possible
  • Torque converter or internal clutch disc[4]Uncommon

What to check first

  1. Note the colour and symbol of the warning light, whether the gear indicator flashes and how the gearbox behaves: jerking, gears that won't go in, high revs or only one gear available.[4][5]
  2. With the car stationary in a safe place, check the condition of the 12 V battery: RACE includes low voltage among the causes of a gearbox that doesn't work.[4]
  3. See when the ATF oil and filter were last changed: RACE speaks of roughly every 100,000 km on torque converter gearboxes and every 90,000 km on CVTs, as the manufacturer indicates.[4][5][6]
  4. Check for oil stains under the car, since a leak in the hydraulic circuit lowers the pressure.[4]
Complete guide: automatic gearbox fault warning

Frequently asked questions

Gearbox warning in the Renault Fluence: what could it be?

In the Renault Fluence, 3 documented faults may be the cause: EDC gearbox overheating and safety neutral, control electronics fault: "check gearbox" warning and loss of gears and oil leak from the EDC output shaft seal, all on the EDC gearbox. Each fault has its own page with the affected years and versions, the cause and how to check for it.

Gearbox warning in the Renault Fluence: is it serious?

Urgency: garage soon. Stop the car somewhere safe. Sometimes the warning disappears when you switch off and on again, but the fault stays logged: have it diagnosed before it gets worse. The most serious fault that causes it in this car has high severity.

Gearbox warning in the Renault Fluence: how much does it cost to fix?

It depends on the cause: at an independent garage, from €2,100 (EDC gearbox overheating and safety neutral) to €2,100 (EDC gearbox overheating and safety neutral), including VAT. A diagnosis at the garage, with a fault code reader if there is a warning light, will tell you which it is.

Has your Renault Fluence had this happen? Tell us which fault it was, at what mileage and how much you paid. Report your fault.

Sources

Every fact on this page links to its source. If you find an error, let us know.

  1. Fiabilité de la boîte EDC : problèmes en série ?fiches-auto.fr · Technical documentation · published February 2020 · consulted 27 September 2026 · in French
  2. FACUA alerta de la llamada a revisión de los Renault Megane IV GT por un problema en la caja de cambiosFACUA · Consumer association · published 26 April 2017 · consulted 27 September 2026 · in Spanish
  3. Boîte EDC 6 : que les vitesses impaires qui passentL'argus.fr (forum) · Owners' forum · consulted 27 September 2026 · in French
  4. No entran las marchas del cambio automático, ¿cuáles son las razones?RACE · Motoring press · published 23 June 2023 · consulted 29 October 2026 · in Spanish
  5. Problemas y mantenimiento en la caja de cambios automáticaRACE · Motoring press · published 10 September 2020 · consulted 29 October 2026 · in Spanish
  6. Así es una caja de cambios CVT automáticaRACE · Motoring press · published 30 May 2023 · consulted 29 October 2026 · in Spanish