Lemon Law Demand Letter in California: What to Include
A California lemon law demand letter is a written notice to the manufacturer that your vehicle or RV could not be fixed under warranty and that you want a repurchase or replacement. It names the defect, lists every repair attempt, cites the Song-Beverly Consumer Warranty Act, and states the remedy you want. Sent correctly, it can start the manufacturer’s response clock and preserve your claim for a civil penalty. Sent carelessly, it can hurt your case. This guide is educational, not legal advice, and it reflects the law as of October 17, 2026.
TL;DR
- A demand letter asks the manufacturer, not only the dealer, for a repurchase or replacement under the Song-Beverly Act.
- Attach repair orders, the warranty booklet, the sales contract, and a dated log of days in the shop.
- Under the newer procedure, a written demand at least 30 days before suing can start manufacturer deadlines, but only for manufacturers that elected that track.
- Do not promise a settlement amount, and do not assume a double penalty. Both depend on proof.
- RV owners should map each defect to the right warranty (chassis, house, appliance) before writing.
Table of Contents
- What does a California lemon law demand letter actually do?
- Do you need a demand letter before filing a lemon law claim?
- What should the letter say?
- Which repair counts and day counts help your case?
- What documents should you attach?
- How do you send it, and to whom?
- Does arbitration change the plan?
- How do AB 1755 and SB 26 affect the deadline?
- What changes when the vehicle is an RV?
- Our perspective: why the letter is a strategy document
- Can you write it yourself, or should a lawyer send it?
- Frequently asked questions
- Sources
What does a California lemon law demand letter actually do?
A demand letter puts the manufacturer on written notice that you are asking for restitution or replacement. It also creates a dated record of what you asked for and when.
The legal basis is the Song-Beverly Consumer Warranty Act. Under Civil Code section 1793.2, a manufacturer that cannot repair a vehicle to match its express warranty after a reasonable number of attempts must replace it or repurchase it. California’s Department of Consumer Affairs describes the same remedy in its lemon law FAQ.
The letter is not a lawsuit. It is also not a complaint, a rant, or a review. It is a short, evidence led document that a manufacturer’s legal department can check against its own repair records.
Our view: the manufacturer’s lawyers will read your letter looking for gaps. They look for a missing repair order, an unclear defect, or days in the shop that a parts delay can explain away. A good letter closes those gaps before they open.
Do you need a demand letter before filing a lemon law claim?
Not always, but you should assume you want one. Whether a letter is required depends on the manufacturer’s election and on whether you want civil penalty leverage.
AB 1755 created Code of Civil Procedure sections 871.20 through 871.30, a new pre suit procedure. Later legislation, SB 26, changed the structure. According to the Department of Consumer Affairs’ page on the new procedures, California now has three paths a manufacturer can take to resolve lemon law disputes, and the first is opting into the process created by SB 26 and AB 1755. So the first question is which path your manufacturer chose.
For a manufacturer on the newer track, a written demand for repurchase or replacement at least 30 days before suing can trigger an offer deadline of 30 days and a completion deadline of 60 days after the manufacturer receives the notice. The Department also states that the manufacturer must acknowledge receipt. Confirm the current election and procedural rules before relying on those numbers, because the statute has changed more than once.
Other lemon law practitioners also advise a written notice at least 30 days before filing if you want civil penalties. We agree with the caution, even where the strict legal requirement is debatable.
What should the letter say?
The letter should state six things, in plain sentences, in this order: who you are, what you bought, what is wrong, what was done about it, what law applies, and what you want.
1. Your identity and the vehicle. Give your name, address, the VIN, the purchase or lease date, the delivery date, the mileage at delivery, and the current mileage.
2. The defect. Describe each defect the way a technician would. “Slideout binds and sidewall cracks near the slideout corner” is useful. “The RV is a disaster” is not.
3. The repair history. List each visit with the date in, the date out, the repair order number, the shop, and what the shop did. Count calendar days, not business days.
4. The legal basis. State that you are invoking your rights under the Song-Beverly Consumer Warranty Act and that the manufacturer failed to conform the vehicle to its express warranty after a reasonable number of attempts.
5. The remedy. Request repurchase (restitution) or replacement. The statute lets you recover more than the purchase price in some cases. Civil Code section 1794 permits damages and other legal or equitable relief, including reasonable repair, towing, and rental costs you actually paid, and certain taxes and fees in a replacement or restitution transaction.
6. Reservation of rights. Say that you reserve all claims, including incidental damages, attorney fees, and any civil penalty the law allows.
Keep the tone factual. The Department of Consumer Affairs frames the legal question as whether the manufacturer had a reasonable number of chances to fix the vehicle, and the presumption can be rebutted. Evidence persuades. Anger does not.
What the letter should never promise
Do not write that you are “guaranteed” a buyback, a double penalty, or any dollar figure. The law makes each remedy depend on proof. A civil penalty of up to two times your damages may be available when the manufacturer’s failure to comply was willful, and only under the statutory conditions in section 1794. A letter that overstates your position gives the other side an easy target.
Which repair counts and day counts help your case?
The Tanner Consumer Protection Act creates a presumption that a manufacturer had a reasonable number of repair attempts. Under the research we reviewed, the presumption applies when, within 18 months of delivery or 18,000 miles, whichever comes first, any of these happened:
- The same serious safety defect was repaired at least twice.
- The same other defect was repaired at least four times.
- The vehicle was out of service for more than 30 cumulative calendar days.
The text of Civil Code section 1793.22 controls, and the presumption is rebuttable.
The 30 day rule is not an automatic win. The statute counts more than 30 cumulative calendar days out of service for warranty repairs. Your letter should attach a day by day log and explain any days a manufacturer might blame on parts delays or authorization waits. If you meet none of these thresholds, you may still have a claim. The presumption is a shortcut, not the only way to prove a lemon. Our guide to the California lemon law repair attempt standard walks through the counting in more detail.
What documents should you attach?
Attach copies, never originals, of everything that proves the warranty, the defect, and the repair history. The Department of Consumer Affairs emphasizes warranty documents, repair attempts, and manufacturer notice in its official materials.
A practical packet includes:
- The purchase or lease contract and the delivery date record.
- The warranty booklet and any extended service contract.
- Every repair order, including those that say “could not duplicate.”
- Invoices, tow receipts, rental receipts, and campground or hotel costs tied to the failure.
- Photos and videos of the defect, with dates.
- Emails, texts, and call notes with the dealer and the manufacturer.
- A one page chronology.
A “could not duplicate” order still matters. It shows you presented the vehicle for repair, which is the opportunity the law requires the manufacturer to have.
Some incidental losses are easy to forget. If you also dealt with an insurer after damage tied to the defect, it helps to understand how diminished value claims are calculated, because that is a separate question from a lemon law buyback and should not be confused with it.
How do you send it, and to whom?
Send it to the manufacturer at its designated lemon law address or email, and keep proof of delivery. Copying the selling dealer is fine, but the dealer is not the party that owes you a repurchase.
The Department of Consumer Affairs says manufacturers must publish lemon law notice contact information. Look in the warranty booklet, the owner’s manual, and the manufacturer’s website. Then use a method that creates a receipt, such as the designated email plus a trackable mailing. Keep the complete packet exactly as sent, along with the delivery confirmation.
Write the date on the letter and on your calendar. If the manufacturer is on the newer procedure, the 30 and 60 day windows run from receipt, so the delivery confirmation becomes your proof of when the clock started.
Does arbitration change the plan?
Sometimes. Some manufacturers run a state certified arbitration program, and you should read your warranty for it before you write.
Under California’s regulations on manufacturer disclosures, the warranty materials should disclose the arbitration process, any requirement to use it, and your ability to reject the decision and go to court. In some circumstances, a consumer may need to use a qualifying program before asserting the Tanner presumption. That does not mean you give up court. It means the sequence matters. Our arbitration playbook for certified programs explains how we approach that choice.
How do AB 1755 and SB 26 affect the deadline?
The deadline is not a single universal “one year” rule. It depends on the vehicle, the warranty, and the manufacturer’s election.
For actions covered by Code of Civil Procedure section 871.20, section 871.21 requires filing within one year after the applicable express warranty expires and no later than six years after original delivery. The statutory text shows that AB 1755 added this rule effective January 1, 2025. SB 26 later amended the scheme, including the manufacturer election provisions and operative timing, as shown in the SB 26 amendments.
Two cautions follow. First, that deadline is a litigation deadline, not permission to wait until the warranty ends. Waiting lets repair records go stale and lets warranty coverage run out while the defect continues. Second, tolling, claim type, and election can change the math. Confirm your own dates.
For more, see our AB 1755 deadline guide for California owners, our explanation of the one year filing window and six year cap, and what happens when the lemon deadline passes.
What changes when the vehicle is an RV?
With an RV, you must first work out which warranty covers which defect. A motorhome often combines a chassis maker’s warranty, a coachbuilder’s house warranty, and separate appliance warranties.
California’s statutory definition of a recreational vehicle in the Health and Safety Code includes a motor home, travel trailer, truck camper, or camping trailer designed for human habitation and meeting size, chassis, and transportability criteria. Those criteria include less than 320 square feet of internal living room area and 400 square feet or less of gross area. Your letter should identify your unit’s classification and warranty rather than assume every trailer is treated the same.
In practice, we ask four questions before drafting an RV letter:
- Is the defect in the chassis, the house, or an appliance?
- Who is the warrantor for that component?
- Which repair orders belong to which warrantor?
- Did the shop that worked on it have authority under that warranty?
A sidewall crack near a slideout on a fifth wheel, for example, points to the coach manufacturer. A transmission fault on a Class A points to the chassis maker. Sending one letter to the wrong party wastes weeks. Our pages on motorhome lemon law, fifth wheel lemon law, and travel trailer lemon law cover how each type differs, and our list of the six most common motorhome defect categories shows what repair histories usually look like.
Our perspective: why the letter is a strategy document
We treat a demand letter as the first move in a case, not a formality. Jeff Le Pere spent 11 years defending manufacturers and dealerships before representing consumers, so we know how the other side reads these letters.
From the defense chair, a weak letter is a gift. It tells the manufacturer which repair orders you lack, which days you cannot count, and whether you understand the warranty. A strong letter does the opposite. It shows the claim is organized and that the owner is represented by someone who has built the manufacturer’s case from the inside.
Three habits separate the two. We map every defect to a warrantor. We count days conservatively and address the manufacturer’s likely explanations first. And we never write a promise the statute does not make.
We also hold a firm view on service. At many high volume firms, a case manager handles the file and you rarely speak with a lawyer. Jeff was a senior managing attorney at one of those firms and left that model behind. Our clients speak with their attorney.
Most owners wait too long and write too emotionally. Collect the repair orders, count the days, and let the documents make the argument.
— Jeff Le Pere
Can you write it yourself, or should a lawyer send it?
You can write it yourself, and the law does not require a lawyer. The question is whether you want to negotiate against the manufacturer’s counsel alone.
A self written letter works best when the repair history is short, the defect is clear, and the manufacturer responds quickly. It gets harder when there are multiple warrantors, as with RVs, when the manufacturer disputes the day count, or when you want to preserve a civil penalty claim. Under Civil Code section 1794, attorney fees may be recoverable when a buyer establishes a qualifying violation, so representing yourself is not the only low cost route.
If you want a lawyer to review your repair orders first, our team offers a free case review. Every case we take runs on contingency, so you owe us nothing out of pocket. Our fees come from the statutory attorney fee recovery paid by the manufacturer or dealer if the case is won or settled. We handle RV lemon law claims across California, along with auto lemon law and dealer fraud cases. Start with a free case review, and have your repair orders ready.
Frequently asked questions
What is a lemon law demand letter in California?
It is a written request to the manufacturer for a repurchase or replacement of a vehicle it could not repair under warranty. It cites the Song-Beverly Consumer Warranty Act, lists the defects and repair attempts, and attaches supporting records. It also reserves your right to claim incidental damages, fees, and any civil penalty.
How long does the manufacturer have to respond?
That depends on the manufacturer’s election. For manufacturers on the newer procedure, the Department of Consumer Affairs describes a 30 day offer deadline and a 60 day completion deadline after receipt of notice. Confirm the current rules and your manufacturer’s status before counting days.
Does sending a letter stop the filing deadline?
No. A letter does not pause the statute of limitations on its own. For covered actions, the filing window is one year after the express warranty expires and no later than six years after delivery, so keep your own calendar.
Should I send the letter to the dealer or the manufacturer?
Send it to the manufacturer at its designated lemon law contact, and copy the dealer if you wish. The manufacturer owes the repurchase or replacement. Use trackable delivery and keep the confirmation.
Can I demand a refund if the dealer sold me a vehicle as certified?
A misleading certification is usually a dealer fraud question, not a manufacturer lemon law question. The remedies and the people you write to may be different. Read about the common deceitful practices in car and RV dealer fraud before you write anything.
Sources
- California Department of Consumer Affairs: Lemon Law FAQ
- California Department of Consumer Affairs: New Lemon Law Procedures
- California Civil Code section 1793.2
- California Civil Code section 1793.22 (Tanner Consumer Protection Act)
- California Civil Code section 1794
- California Code of Civil Procedure sections 871.20 and following
- SB 26 as amended, Legislature
- 16 CCR section 3397.2, manufacturer disclosures
- California Health and Safety Code, recreational vehicle definition