clio 2 1.5dci 74kw 70ah battery? bj 2004

hello people to my problem have had a 70 ah battery installed when installing the cam the master with the key to the plus pole and the body. he meant first that’s not bad my car jumps now but no longer claims it’s just because the battery is too big and the controller it can’t hold out that the battery is too big? thanks already for your help mfg