If you've been arrested for DUI in San Diego and you either refused a chemical test or you're being accused of refusing one, you've walked into one of the more confusing corners of California DUI law. The rules around implied consent trip up a lot of people, and the penalties for a refusal can actually be worse in some ways than the DUI itself. The good news is that a refusal allegation is not automatic, and it can be fought.
Crudo Law defends drivers across San Diego County who are facing chemical test refusal allegations. Attorney Joseph C. Crudo knows how these cases work, where the state overreaches, and how to push back.
Overview
"Implied consent" is a legal concept built into California's Vehicle Code, primarily Vehicle Code 23612. The idea is straightforward, even if the consequences aren't. When you got your California driver's license and drove on the state's roads, you were deemed to have agreed in advance that, if you're lawfully arrested for DUI, you'll submit to a chemical test of your blood or breath to determine your blood alcohol content. That's the "implied" part. You didn't sign anything specific, but the law treats driving as your consent.
Here's the piece that confuses almost everyone. Implied consent applies to the chemical test that comes after a lawful DUI arrest. It does not cover the roadside tests. The preliminary alcohol screening, or PAS, that little handheld breath device an officer offers before arresting you, is generally optional for adult drivers who are not on DUI probation, and the field sobriety tests, the walk-and-turn, the one-leg stand, and the rest, are voluntary too. A lot of people think they were required to do those roadside tests. Usually they weren't. It's the post-arrest evidentiary test where implied consent kicks in.
If you refuse that post-arrest chemical test, California imposes penalties that stack on top of whatever happens with the DUI charge. Refusal typically triggers a longer, mandatory driver's license suspension through the DMV, and it can add a "refusal enhancement" to the criminal case, which means extra mandatory jail time and a longer DUI education program if you're convicted. On top of that, the prosecutor gets to argue to a jury that you refused because you knew you were guilty. That's a lot of downside, and it's why refusal cases need careful handling.
There's also a strict deadline in play. Just like a standard DUI, a refusal allegation triggers the DMV's Administrative Per Se process, and you have only 10 days from the arrest to request a hearing to protect your license. This area overlaps heavily with our work on refusing a breath test and DMV hearings.
Joe's Approach
The label "refusal" gets thrown onto a lot of cases where the driver didn't really, knowingly refuse anything. That's the first thing Joe looks at. Under California law, a valid refusal requires more than the officer just deciding you didn't cooperate. The arrest has to have been lawful, the officer has to properly advise you of the consequences of refusing, and your conduct has to actually amount to a willful refusal. Break any link in that chain and the refusal allegation can fall apart.
Joe handles these cases himself, and he starts by getting the full record: the police report, the body camera and dash camera footage, and the officer's account of exactly what was said and when. He's looking for specific things. Did the officer read the required admonition, the warning that spells out what happens if you refuse? Was it read clearly and completely, or rushed and garbled? Did you actually understand what was being asked? Were you confused, injured, or unable to physically perform a breath test? Did a language barrier get in the way? Any of these can turn an alleged "refusal" into something the state can't prove.
Because a refusal allegation hits you on two fronts, the DMV and the criminal court, Joe fights on both. He'll request the DMV hearing within the 10-day window and challenge whether the refusal was valid under the administrative standard, and he'll attack the refusal enhancement in the criminal case at the same time. He explains the whole landscape to you in plain terms, so you understand what you're up against and what the realistic paths forward are. You can read more about his approach on the about page.
Defense Strategies
Refusal cases have their own distinct set of defenses, separate from the usual DUI challenges. These are the ones Joe reaches for most often.
The arrest wasn't lawful. Implied consent only applies after a lawful DUI arrest. If the officer didn't have probable cause to arrest you, or the traffic stop itself was illegal, then the whole basis for demanding a chemical test collapses, and so does the refusal allegation built on top of it.
The officer didn't properly admonish you. California law requires the officer to advise you that refusing a chemical test will result in specific consequences, including a license suspension and possible extra penalties. If that admonition wasn't given, was incomplete, or was so unclear that you couldn't reasonably understand it, there may not be a valid refusal at all.
You didn't actually refuse. This comes up more than you'd think. Asking questions, hesitating, requesting to speak with a lawyer first, or trying but failing to give an adequate breath sample are not always the same as refusing. Confusion is not refusal. If the footage shows you were trying to comply or genuinely didn't understand what was being demanded, Joe can argue there was no willful refusal.
A medical or physical inability. Some people physically can't complete a breath test. Certain lung and respiratory conditions, injuries, panic, or the effects of the arrest itself can make it impossible to blow a valid sample. An inability to perform is not a refusal. If a medical issue was in play, that can be a strong defense, especially when the officer should have offered a blood test instead.
Confusion between tests. Officers sometimes create confusion by mixing up the optional roadside PAS test with the mandatory post-arrest test, or by giving conflicting instructions. If you reasonably believed you were declining an optional test you had every right to decline, that undercuts the claim that you knowingly refused a required one.
Language and communication barriers. If English isn't your first language and the admonition wasn't communicated in a way you could understand, the state may not be able to prove you knowingly refused.
Potential Outcomes
As with any case, nobody can honestly guarantee you a specific result. Refusal cases turn on the facts, the footage, and how well the officer followed the rules. What Joe can do is fight to knock out the refusal allegation and limit the damage. Here's the range of what's possible.
The best outcome is getting the refusal allegation set aside entirely. When Joe can show the arrest was unlawful, the admonition was defective, or there was no willful refusal, the refusal enhancement in the criminal case can be dismissed, and the extra mandatory penalties that come with it disappear. That doesn't necessarily end the underlying DUI, but it removes a serious layer of exposure.
On the DMV side, a successful challenge at the Administrative Per Se hearing can mean keeping your license or avoiding the longer suspension that a refusal finding carries. For a lot of people, that's the outcome that matters most day to day.
Even where a refusal finding holds up, beating it back partially or negotiating from a position of strength can lead to reduced penalties and, in some cases, a resolution like a "wet reckless" reduction on the underlying DUI. And if a case should be tried, the state still has to prove the refusal was knowing and willful, which is not always easy for them to do.
The takeaway is that a refusal allegation is a fight worth having, not a foregone conclusion.