leecurthoys

They didn’t. However they did say to press and hold to set, which I did the first time but it just reverted to all 000000s. I tried pressing once and that set it. So I think in answer to your question, if you do get it wrong, as long as you don’t press set, it will reset. From my own experience of setting the pulse code (you’re correct, it’s a very similar process), then switching off the ignition will just reset anything you done up to the point of saving.

To close the loop on this, I’ve spoken to the service team at Williams and they’ve explained how to do it: 1. Press and hold the speedo button. 2. Turn on ignition and release button when ‘setup’ shows on odometer. 3. Press button again and ‘setodo’ will show. 4. Press and hold button until ‘000000’ shows then release. 5. Each digit will flash in turn starting with leftmost. 6. Press the button as each digit flashes to increase it by 1; do this multiple times to set the right number (remember to leave any preceding 0s). 7. When the digit is set, stop pressing the button and after a moment the next digit will flash, then repeat step 6. 8. Once all digits are set, all digits will flash; press the button once and ‘done’ will show. 9. The odometer is now set. For anyone of you unscrupulous bunch thinking this would be a good way to alter your mileage, apparently this can only be done once, which means you can’t change it after it has been set (sorry to disappoint!).

It took me approximately 100 hours, but I did it over about 4 months in the winter. I have limited mechanical knowledge and experience so learning on the job took extra time. Plus as others have mentioned, my kit was missing parts (some caterham informed me of and some I had to figure out for myself and request from caterham). Added to that was the fact mine was one of the first 170 builds, so the manual was lacking in some areas. I’d suggest going through everything Caterham has sent you and reading a number of blogs (mine or Jon Martins are good) to see what order to do it in (the manual’s order is inconvenient and even impossible in same cases, especially in relation to the roll bar / rear suspension fitting).

I’ve fitted a new speedo to my 2023 170R after the metal surround on the one fitted when the car arrived had already started going rusty after six months. The new one was supplied by caterham under warranty but I fitted it myself. I have changed the pulse code so it matches the tyre size. However the odometer is showing zero miles (not the 3,000 I’ve already put on it). And it is the odometer not the trip. Has anyone had a similar problem when replacing the speedo and do you know how to set the mileage back to what it should be? IMG_7758.heic

I believe I have one of the first kit built 170s (mine is a 170R). I've started on a build blog which I'll be completing as the build progresses. Feel free to take a look... https://caterham170r.wordpress.com