"The Fourth Amendment does not require police officers who lack the precise level of information necessary for probable cause to arrest to. Authorities have probable cause that a crime has been committed and that evidence of said criminal act could be lost if a search is not undertaken immediately.Inventory searches of impounded cars are impermissible if they do not follow previouslyimplemented and Constitutional police procedures. Under the Fourth Amendment of the constitution, you have the right to privacy and protection from unlawful search or seizure. Police have the right to come onto private property if there is a crime in progress. Originally Answered: Can you refuse to show your identification (ID) to a police officer if they do not have reasonable suspicion or probable cause? When can the police legally search my car? The Fourth Amendment can also be invoked whether or not there was probable cause to stop you and make the arrest. You should exercise your Fourth Amendment rights, decline to give consent to the officer, simply ask for the traffic stop to be concluded and go. If a search is done without probable cause, the evidence may be thrown out in court as a result of the illegal Search and Seizure.