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FAQ

Category: Known issues 
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Reset a C4 Cruise control with a service lamp and "Speed Control System Faulty" error message
  6.9 - 13 votes
C4 red 'STOP' light and warning beep + the computer says 'Engine temperature too high'
  10.0 - 2 votes
C4 vts 2.0 steering wheel shaking like a mad cow?
  10.0 - 3 votes
C4 engine cuts out in traffic at idle - when clutch is depressed
  10.0 - 1 vote
C4 speedo keeps flickering, with general beeps etc when turning the engine on
 
C4 Alarm goes off when parked in High Winds?
  9.0 - 2 votes
Headlight Levelling and or Directional Headlight Fail
  6.3 - 3 votes
Heating fails to adjust to the temperature you set
  9.2 - 37 votes
C4 Coupe Door Handles stick?
  7.5 - 4 votes
2.0 HDi Engine issue
  5.5 - 2 votes
2.0 HDi knocking from Right side wheel arch area?
  10.0 - 2 votes
Tailgate Lock Failure?
  8.5 - 10 votes
My clutch feels strange?
  6.6 - 5 votes
VTS/Exclusive the 'follow round corner' headlights - droop!
 
1.6 Petrol engine noisy tappets when cold?
  9.0 - 10 votes
C4 Picasso worn or broken locking wheel nuts
  5.5 - 2 votes
C4 1.6 HDi Oil Changing and Turbo Failure
  9.6 - 11 votes
C4 2.0L HDi EGS - Loss of Auto, paddle shift and cruise!
  10.0 - 2 votes
Why the windscreen washers won't work
  10.0 - 15 votes
Petrol C4 doesn't start or takes a lot of starting?
  10.0 - 3 votes
C4GP Sticking Fuel Filler Cap
  9.4 - 5 votes
C4 Brake lights work intermittently
  10.0 - 3 votes
Engine vibration then electrical failures
  5.5 - 2 votes
2.0 HDi ESP warning light constantly on?
  9.5 - 4 votes
Starter Motor fuse keeps blowing
  9.8 - 12 votes
C4GP Windscreen Wiper failure
 
C4 HDi fails to start and fuel system needs priming
  1.0 - 1 vote
C4 Starter Motor fails to turn over engine
  10.0 - 6 votes
C4 Coupe and Hatch lower front windscreen seal
  6.4 - 9 votes
There's a knocking noise from the rear of my C4
  10.0 - 6 votes
C4 Headlamp Adjuster switch doesn't work.
  10.0 - 2 votes
My doors rattle or have a hollow sound
  7.8 - 6 votes
C4 Depollution System Faulty / Engine Management Light on
  6.3 - 8 votes
Fuel smell in passenger cabin or leak
  8.5 - 2 votes
C4 Grand Picasso can't lock the car.
 
Air Conditioner - Water is leaking into the foot wells on both sides of the vehicle
  9.5 - 24 votes
STOP. Oil pressure too low
  7.7 - 4 votes
Find out why a C4 cooling fan not coming on.
  1.0 - 1 vote
C4, DS4 and C4 Picasso - Common Problems
  9.0 - 15 votes