A guard for a restraints control module includes a corrugated base and right and left corrugated sidewalls. The sidewalls extend above the base and are spaced from a restraints control module secured to the base. The sidewalls diverge from each other in a vertical direction above the base and include alternating furrows and ridges that form the corrugations. The furrows and ridges are connected by rib walls that strengthen the guard against lateral collision forces. A method is disclosed for protecting a restraints control module in a side impact collision. According to the method, in a side impact collision, an object driven into the guard bends the sidewall towards the restraints control module to absorb the impact force applied by the object.