ADVICE CENTRE // KNOWLEDGE
The JVS Advice Centre
Genuinely useful automotive technical knowledge — written by people who do the work, not content farms. Topics that relate to the real vehicles and faults we see in Telford and Shropshire.
AUTO ELECTRICAL // 2026-09-01
Why Does My Car Battery Keep Going Flat? Parasitic Drain Explained
A battery that dies overnight is rarely a battery problem. Here's what parasitic drain actually is, and how a systematic investigation finds the circuit that's staying awake.
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DIAGNOSTICS // 2026-08-28
Why Simply Deleting Fault Codes Doesn't Fix Your Vehicle
The warning light is off... for now. Here's why clearing a fault code without diagnosing the cause means the problem always comes back — and what proper fault finding looks like instead.
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BMW & MINI // 2026-08-18
What is BMW ISTA? The Diagnostic System Behind Proper BMW Fault Finding
If you've looked for a BMW specialist, you've seen the word ISTA. Here's what it actually is, why it matters, and how it changes the quality of diagnosis your BMW receives.
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