If you are arrested in Michigan for drunk driving, and the police do not read you your implied consent rights, then under the right facts it might be possible to have the alcohol test thrown out. To understand why, it’s important to first understand Michigan’s implied consent laws.
If you are arrested in Michigan for drunk driving then the police will be requesting that you give them a sample of your breath blood or urine. Breath testing is the most common alcohol test in Michigan. Because an alcohol test is a search, the Constitution’s Fourth Amendment applies.
In very basic terms, the Fourth Amendment requires a warrant for any sort of search, including in the context of a Michigan drunk driving arrest. However, there are exceptions to the warrant requirement, and the most common of them is consent. So if the police ask you for a breath sample voluntarily, and you say “yes,” then there is no reason for the police to obtain a warrant.