The gearbox diff should last much longer (car had done 40,000). The total bill for this job was £2,100, (but included a new 6th gear as they also advised that this was fractured). Car was in garage for 6weeks and 2 days for this work to be carried out. Citroen specialist advised this was due to Citroen parts on back order!
-Gearbox faulty and beeping sound. When gearbox fault came I lost speed display ,limited speed. Took it local Citroen dealer today. They said: CARRIED OUT GLOBAL TEST .REMADE WIRING CONNECTIONS TO UNDER BONNET FUSE BOX ,CLEARED FAULT CODES. They charged 42.50 plus VAT total of 51 pounds.
I have problems with my 2009 C4GP. The issue appears as warning lights for ABS, ESP, Handbrake and Gearbox. The car has the EGS semi auto box, and will not change up in Auto and will only change to max of 3rd in manual. I believe this is the limp mode activating (please confirm). Gearbox construction: Automatic. Transmission type: 8 EAT, 6 AT. Average acceleration: 9.5 s to 60 mph. Average optimal engine speed: 4500 rpm. Average torque: 294 Nm. Weight to torque ratio: 5 kg to 1 Nm. Average weight: 1411 kg / 3111 lbs. Maximum load for transmission: 2041 kg / 4500 lbs. Gearboxy rating: 8 / 10.

I have discovered that when the car is started from cold, you get the typical autobox drone while it changes gears, not a problem gear changes are ok, but as the car gets warm you appear to loose the windup drone and the gears are fast changing, problem, from 1st to 2nd you sometime get that dreaded LUNGE you got from the ETG boxes, but only

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citroen c4 picasso auto gearbox problems