#roadside
9 posts in Car Diagnostics blog about "roadside" — OBD-II diagnostics, DTC codes, repair. ← All posts
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Battery light on while driving: how long you have left
The red battery lamp does not mean the battery. It means charging has stopped, and you are now running the whole car from a reserve that is measured in minutes.
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Key stuck in the ignition: causes and safe fixes
On an automatic this is usually the gear selector, not the lock. On a manual it is usually the steering lock. Both are free to fix if you try them before forcing anything.
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Steam from under the bonnet: stop or drive on?
The decision has to be made in about ten seconds, and getting it wrong turns a cheap hose into a cylinder head. Here is how to read the situation from the driver seat.
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Steering wheel locked and the key will not turn
Nine times out of ten this is not a fault at all, and the fix takes five seconds. The other one time is a lock cylinder, and it is worth knowing which you have before calling anyone.
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The clutch pedal went to the floor: hydraulics, not the clutch
A pedal that suddenly drops almost always means hydraulics rather than the disc. The cylinders, the fluid, and what to do on the road.
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Spare wheel, space saver, or sealant: what actually helps at a puncture
Manufacturers delete spare wheels for weight and space. What each option gives you and why sealant sometimes makes things worse.
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An emergency kit: what to carry so you do not depend on strangers
A kit in the boot is not for repairing the car but for waiting safely for help. What works and what rides along for nothing.
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Breaking down on a motorway: the procedure that protects you, not the car
The most dangerous part of a motorway breakdown is not the breakdown but what driver and passengers do in the first few minutes. The correct order.
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Tools in the boot: what is genuinely useful and what rides along for nothing
A big socket set in the boot almost never saves the day. What actually works at the roadside, why an adapter beats spanners, and what belongs at home instead.