About This Site

720smanual.com is an independent technical reference for the McLaren 720S. It contains a complete reconstruction of the McLaren Service Information System (SIS) — the same documentation platform used by McLaren-authorized dealers — made freely accessible without proprietary software or a dealer subscription.

5,885

Service Procedures

2,217

Diagrams

111

TSBs & Bulletins

106

PDFs

Who Built This

Jonathan Bensen

Owner · Technician · Builder

I own a McLaren 720S and do my own service work. I've rebuilt hydraulic accumulators, done SSG fluid changes, pulled calipers, replaced suspension components, and navigated the EPB service mode more times than I'd like to count. I'm not a McLaren dealer tech — I'm an owner who needed good documentation and got fed up with the lack of it.

By day I work in enterprise technology and infrastructure. The combination of technical depth and an obsessive need for accurate documentation is what made this project possible. It took a significant amount of time to reconstruct and organize the SIS into the format you see here, and I continue to update it as McLaren issues new TSBs and as I discover errors in my work.

Contact: admin@720smanual.com

Why This Exists

The McLaren SIS is factory-only software. Independent shops and owners who want to service their own vehicles have no official way to access it. The alternative — piecing together repair procedures from forum threads and hoping the torque spec someone posted in 2019 was correct — isn't acceptable on a car with hydraulic suspension operating at high pressure and a lithium battery that requires specific charging protocols.

I built this because I needed it. The first job that pushed me over the edge was an accumulator replacement where I spent more time validating a single hydraulic line torque figure than I did on the actual repair. That shouldn't happen. So I rebuilt the whole SIS in a browser-native format and made it available to anyone who needs it.

It's free to use. I've added Google AdSense ads to cover server costs. If that ever offends anyone, use an ad blocker — the content will still be there either way.

What's Included

Complete workshop repair procedures — engine, transmission, suspension, brakes, body, electrical
Wiring diagrams with pin-out tables and connector location references
Diagnostic trouble code (DTC) reference and ECU architecture documentation
All 111 Technical Service Bulletins (TSBs) filed with NHTSA as Manufacturer Communications
Torque specifications for every fastener in the car
Fluid capacities and approved fluid specifications
Special tool requirements called out per procedure
Flat-rate repair times (FRM data)

How the Content Is Organized

The documentation follows the same hierarchy as the original SIS: by vehicle system, then by document type within each system. The main system categories are:

Powertrain — M840T engine, SSG dual-clutch gearbox, driveshafts, cooling, exhaust
Chassis — RCC II hydraulic suspension, steering, brakes, wheels and tires
Electrical — CAN bus architecture, wiring diagrams, ECU locations, PDU/fuse data
Body Structures — Monocage II tub references, outer panels, closures, glazing, seals
Interior — Trim, seats, HVAC, infotainment, instrument cluster
Accessories & PDI — Dealer setup procedures, track day prep documentation, special tools

Notable TSBs Worth Reading

Not all 111 TSBs are equal. A few are critical enough that I'd recommend reading them before doing any service work on the car:

SCB_14_A_003 — Airbrake panel bolt torque check. This is a safety campaign. Check it.
SCB_00_B_001 — Rear toe link inspection. Recall-level severity.
KA-01007 (v2) — Engine bay rattle diagnosis. Comes up constantly on the forum.
Any SCB_ prefixed document — these are service callbacks and campaigns, always read them for your VIN.

The full searchable TSB index is at 720smanual.com/tsbs.html.

Accuracy and Corrections

I make mistakes. The SIS reconstruction process was painstaking but not infallible. If you find an error in a procedure, a wrong torque figure, or a broken diagram — please contact me with the document ID and what's wrong. I'd much rather fix it than have someone strip a thread or damage a component because of bad data on this site.

McLaren Diagnostic System (MDS)

This site covers service documentation — not diagnostic software. For MDS (the McLaren-specific diagnostic tool required for ECU programming, adaptations, and calibrations), the community resource is mcltech.net.

Legal

This site is not affiliated with, endorsed by, or connected to McLaren Automotive Limited. All trademarks remain the property of their respective owners. Technical documentation is reproduced for educational and informational purposes. See the Terms of Use and Privacy Policy for full details.

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