FAQ
TL;DR: Renault Megane III no‑start with “Turn steering wheel + START” had 1 confirmed fix: “Problem solved: replacing the lock module and the cable bundle.” Try ESL checks, fuses, and wiring before blaming the reader. [Elektroda, domeno1204, post #17096605]
Why it matters: This FAQ helps Megane III owners diagnose a dead start button/card reader scenario fast, focusing on the steering column lock (ESL) and wiring faults.
Quick Facts
- Symptom snapshot: message shows, no dash self‑test after card insertion; initial battery declared functional. [Elektroda, domeno1204, post #16990696]
- Proven root cause in this case: faulty steering column lock module plus chafed cable bundle, replaced and programmed. [Elektroda, domeno1204, post #17096605]
- Clue with door open: cluster shows “STEERING WHEEL LOCKED,” pointing at the ESL not releasing. [Elektroda, domeno1204, post #16991647]
- Location/tools: ESL sits on the steering column under the lower shroud; Torx T30/T40; left‑hand thread possible. [Elektroda, Dawidson1996, post #16991185]
- First steps: check fuses and use a capable diagnostic tool before dismantling. [Elektroda, kamiloskop, post #16991455]
What does “Turn the steering wheel + START” mean on a Megane III that won’t start?
It indicates the electronic steering lock (ESL) has not released, so ignition won’t progress or complete the self‑test. As one expert noted, “A broken lock will not let you through,” which stops the start sequence cold. [Elektroda, lukash3, post #16991473]
Where exactly is the steering column lock (ESL) on the Megane III?
It mounts on the steering column behind the lower steering wheel cover. Remove the lower shroud to access it for inspection or removal. Expect Torx fasteners and awkward access near the column. [Elektroda, Dawidson1996, post #16991185]
How should I triage a no‑response card reader/start button issue?
Start simple: check all related fuses, then plug in a capable diagnostic tool. Avoid stripping the column until basic power and fuse checks are done. This prevents unnecessary teardown and speeds fault isolation. [Elektroda, kamiloskop, post #16991455]
Can I scan the car if the ignition won’t come on?
A basic scanner may not communicate without ignition power. A mechanic reported standard tools could not connect in this state, so use higher‑end diagnostics or restore ESL release first. [Elektroda, domeno1204, post #16991647]
What finally fixed the OP’s car in this thread?
Service replaced the steering lock module with a used, programmed unit and renewed a chafed cable bundle. “Problem solved” once both were addressed, confirming ESL plus wiring as the culprit. [Elektroda, domeno1204, post #17096605]
Could a weak battery after sitting trigger this behavior?
Yes. The car sat 3 days and then showed low voltage, compounding the issue. Low voltage can mask or trigger ESL faults and communication drops. Recharge or swap in a known‑good battery first. [Elektroda, domeno1204, post #16991647]
How do I access and inspect the ESL without damage?
- Disconnect the battery and wait several minutes.
- Remove the lower steering wheel shroud to expose the lock unit.
- Inspect the lock, wiring, and mounting bolt; note thread direction before loosening. [Elektroda, Dawidson1996, post #16991185]
Do I need special bits or to worry about thread direction?
Use Torx T30 or T40 on the ESL fasteners. One case noted a left‑hand thread, so verify before turning to avoid stripping or snapping the bolt. [Elektroda, Dawidson1996, post #16991185]
Is the key card reader usually at fault here?
Not in this case. Despite suspicion, replacing the ESL and repairing the harness solved the no‑start, confirming the reader was not the root cause. [Elektroda, domeno1204, post #17096605]
Why are there no dash lights or steering‑unlock sounds?
With the ESL stuck, you won’t hear the unlock buzz, and the ignition self‑test may not start. Users reported complete silence despite card insertion. [Elektroda, domeno1204, post #16991155]
What’s an edge case with the ESL bolt or mechanism?
If the ESL bolt or lock mechanism is damaged, the start sequence halts. As one member put it, “A broken lock will not let you through.” [Elektroda, lukash3, post #16991473]
Could recent wheel changes have caused the issue?
Unlikely. The OP changed wheels during the downtime, but it did not affect the fault. Focus on ESL function, power supply, and harness condition. [Elektroda, domeno1204, post #16991647]
