My engine warning light came on the other day after i had stopped my bike at work for all of about 30 secs to open up a gate while the engine was left running.

Ive got a 2010 Tenere, 27k miles, about 3 k miles ago i did a complete service myself of oil, filter, air filter, valve clearances and in doing this i drained the cooling system and refilled with new coolant. After i had done this i checked a few times on the engine oil level and coolant as ive never done the valve clearance and only need to adjust the exhaust ones by a small but as they where on the tighter limits.

In the last few rides which have been slower ive taken the bike to work due to traffic issues ie so slow riding ive noticed the engine feels very warm in part the LHS from the exhaust.

A few days before the engine light came on i was at a motorbike race and while waiting to leave was in heavy traffic and the fan came on but what seem like quiet early but i didn't really think much of it

The other day going to work i had some slow speed stuff for a few miles then it freed up for at least 5 miles of steady 50mph riding, it was around 10 degrees celsuis so not even that warm, i parked the bike up at work and left the engine running while i unlocked the gates and when i got back 30 secs later the engine warning light was on and the bike was roasting hot.

I checked the engine oil and it was ok, checked coolant and it was ok but i took the thermostat off and it had some slime around the seal so i cleaned it and put it back in.

Ive been trying to think what it might have been and why the engine feels so warm.

Only thing i can think of is see what the diagnostics say for that engine warning light or take out the thermostat and make sure its still working by i think placing it in a pot of boiling water and then it should open???

any advice, help very welcome

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Plough on