2005 Renault Laguna Laguna 2 Sports Tourer ABS Speedometer

Thail lock was not operating. Removed fuse for doors. Found connector to latch mechanism corroded. Made a pepair. Replaced the door fuse.
Nothing would work.

Inspected engine compartment fuse box. There is a 20A yelloiw fuse in one of the unused Relay sockets. I pullet it out and inspected. It was Ok. But I am uncertain that it should be there and secondly I replaced it properly.

Found the Immobiliser fuse blown. Repaced fuse and all seemed to work fine.

Unfortunately on driving ABS light and parking Brake light come on and no Speedometer.

Help appreciated.