This paper presents a simple robot localization technique using the wireless visual servoing technique involved in an autonomous ground vehicle ODIS (omnidirectional inspection system) for under-car inspection tasks in standard parking lot environment. Based on the current architecture of ODIS and the dedicated scripting language, an iterative visual servoing scheme is proposed to align the yellow line of the parking lot. The iterative scheme tolerates the uncertain time delay due to the wireless connections without introducing stability problem due to time-varying delay in real-time visual servoing. Experimental results are presented to show that for our specific application, the wireless visual servoing technique presented in this paper is an efficient way for robot localization.