Broad substrate specificity ATP-dependent transporter of the ATP-binding cassette (ABC) family that catalyzes the transport of long- chain fatty acids (LCFA)-CoA, dicarboxylic acids-CoA, long-branched- chain fatty acids-CoA and bile acids from the cytosol to the peroxisome lumen for beta-oxydation (PubMed:11248239, PubMed:24333844, PubMed:25168382, PubMed:29397936). Has fatty acyl-CoA thioesterase and ATPase activities (PubMed:29397936). Probably hydrolyzes fatty acyl- CoAs into free fatty acids prior to their ATP-dependent transport into peroxisomes (By similarity). Thus, play a role in regulation of LCFAs and energy metabolism namely, in the degradation and biosynthesis of fatty acids by beta-oxidation (PubMed:24333844, PubMed:25944712). {ECO:0000250|UniProtKB:P33897, ECO:0000269|PubMed:11248239, ECO:0000269|PubMed:24333844, ECO:0000269|PubMed:25168382, ECO:0000269|PubMed:25944712, ECO:0000269|PubMed:29397936}. This is the function of ABCD3 (ATP binding cassette subfamily D member 3, Ensembl gene identifier ENSG00000117528).