car stuck in auto mode and will not start

If you have Automatic gearbox problems or issues that would only affect an Auto, please ask here.

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Think: Auto not changing up or down, snowflake/sport flashing, flappy paddles, actuator fault and sensodrive not changing gear.
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Model: C3 2002-2005, Original shape model
Year: 2002 (52)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 100000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: DV4 16-valve diesel (90 PS)
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John Rutter wrote:I'll bet you that it has performed 1,000,000 gear changes, after which the ECU locks the ability to start off. Citroen advise changing the gear actuators and then resetting the ECU. Very expensive. But it is worth first checking that the brake light switch isn't faulty. If it is, changing it and performing an ECU reset should fix it! Had the same with mine and its been a nightmare, for lack of information!
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