Without prejudice to paragraph 1, in order to avoid modifications or adjustments with adverse effects on the functional safety or on the environmental performance of the vehicle, the manufacturer shall endeavour, through the use of best engineering practice, to prevent such modifications or adjustments from being technically possible, unless such modifications or adjustments are explicitly declared and contained in the information folder and thus covered by the type-approval.
Gan dochar do mhír 1, chun modhnuithe nó coigeartuithe a mbeadh éifeachtaí díobhálacha acu ar shábháilteacht fheidhmiúil nó ar fheidhmíocht chomhshaoil na feithicle a sheachaint, déanfaidh an monaróir gach dícheall, trí shárchleachtas innealtóireachta a úsáid, cosc a chur ar mhodhnuithe nó coigeartuithe den sórt sin a bheith indéanta go teicniúil, mura rud é go ndéantar na modhnuithe nó na coigeartuithe sin a dhearbhú go sainráite agus go bhfuil siad luaite san fhillteán faisnéise agus ar an gcaoi sin clúdaithe ag an gcineálcheadú.