TPMS Light On? Don't Ignore It

Published on 23 August 2025 at 17:24

TPMS Light On? Don't Ignore It – Here's Why Your Stevenage MOT Could Fail

Is your TPMS (Tyre Pressure Monitoring System) warning light glowing on your dashboard? Don't brush it off as a minor inconvenience. This seemingly simple warning could cost you your MOT test and put your safety at risk.

If you're in Stevenage, Hertfordshire, or anywhere in the UK, understanding your TPMS system could save you time, money, and potentially prevent a dangerous situation on the road.

What is TPMS and Why Does the Light Come On?

The Tyre Pressure Monitoring System (TPMS) is a safety feature that monitors the air pressure in your vehicle's tyres. When the system detects that one or more tyres are significantly under-inflated (typically 25% or more below the recommended pressure), it triggers a warning light on your dashboard.

The TPMS light typically appears as:
  • A horseshoe-shaped symbol with an exclamation mark
  • Sometimes accompanied by "TPMS" text
  • May flash initially, then remain solid

Common TPMS Issues That Stevenage Drivers Face

1. Low Tyre Pressure (Most Common)

Cold weather, natural air loss, or small punctures can cause gradual pressure loss. With Hertfordshire's variable climate, temperature changes are a frequent culprit.

2. Faulty TPMS Sensors

Each wheel has a sensor that can fail due to:

  • Battery depletion (sensors typically last 5-10 years)
  • Physical damage from potholes or curb impacts
  • Corrosion from road salt and moisture

3. Sensor Programming Issues

After tyre changes, rotations, or replacements, sensors may need reprogramming to communicate properly with your vehicle's system.

4. Spare Tyre Confusion

Some vehicles monitor the spare tyre too. A flat spare in your boot could trigger the warning light.

5. System Malfunction

The TPMS control module or wiring can develop faults, causing false warnings or system failures.

TPMS and Your MOT Test: What You Need to Know

Here's the critical information every UK driver needs: Since 2012, TPMS has been mandatory on all new passenger cars sold in the EU (including pre-Brexit UK sales). For MOT testing purposes: ```
  • TPMS malfunction is an MOT failure for vehicles first registered after 1st January 2012
  • The system must be working correctly with no warning lights illuminated
  • Even if your tyre pressures are correct, a malfunctioning TPMS will fail your MOT
  • This applies to the annual test for vehicles over 3 years old

Don't risk an MOT failure – address TPMS issues before your test date.

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Why You Should Fix TPMS Problems Immediately

Safety First

  • Tyre blowouts: Under-inflated tyres are more prone to catastrophic failure
  • Poor handling: Reduced steering response and longer stopping distances
  • Increased accident risk: Especially dangerous on busy roads like the A1(M) or A10
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Financial Benefits

  • Fuel economy: Properly inflated tyres improve fuel efficiency by up to 3%
  • Tyre longevity: Correct pressure prevents premature wear and replacement costs
  • Avoid MOT failure: Re-testing fees and potential delays

Legal Compliance

  • Meet UK road safety standards
  • Avoid potential insurance complications in case of an accident
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DIY TPMS Troubleshooting Steps

Before visiting a garage, try these simple checks:
  1. Check tyre pressures manually with a reliable gauge
  2. Inflate to manufacturer specifications (found in door jamb or manual)
  3. Drive for 10-15 minutes to see if the light resets
  4. Check your spare tyre if your vehicle monitors it
  5. Look for obvious damage to tyres or wheels
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If the light persists after these checks, professional diagnosis is needed.

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When to Seek Professional Help in Stevenage

You should visit a qualified garage if:

  • The TPMS light remains on after correcting tyre pressures
  • The light flashes for 60-90 seconds then stays solid (indicates system malfunction)
  • You've recently had tyres changed or rotated
  • Your MOT is approaching and the light is illuminated
  • You're experiencing handling issues alongside the warning

How We Can Help: Professional TPMS Services

Our comprehensive TPMS services include:

Diagnostic Testing

  • Advanced diagnostic equipment to identify specific sensor faults
  • Complete system health checks
  • Accurate fault code reading and interpretation
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Sensor Services

  • TPMS sensor replacement with OEM or quality aftermarket parts
  • Battery replacement for repairable sensors
  • Sensor programming and calibration

System Repairs

  • Wiring and module repairs
  • Software updates and recalibration
  • Post-repair testing and verification

MOT Preparation

  • Pre-MOT TPMS checks
  • Same-day repairs to avoid test delays
  • Comprehensive tyre pressure optimization
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Serving Stevenage and Surrounding Areas

Conveniently located to serve:
  • Stevenage town center and all districts
  • Knebworth, Welwyn, and Hitchin
  • Baldock, Letchworth, and surrounding Hertfordshire villages
  • Easy access from A1(M) Junction 7 and 8
Why choose our local service:
  • Same-day appointments available for urgent MOT preparations
  • Competitive pricing with transparent quotes
  • Experienced technicians with latest TPMS diagnostic equipment
  • Local knowledge of common issues affecting Hertfordshire drivers

Cost-Effective TPMS Solutions

🔧 TPMS Sensor Replacement from just £30 + VAT 🔧

Additional services:

  • System reprogramming: £25-40
  • Diagnostic check: £25-35
  • Complete system service: Quotes provided after diagnosis

Prices may vary based on vehicle make and specific requirements

Prevention Tips for TPMS Longevity

Extend your TPMS system life with these tips:
  • Monthly tyre pressure checks
  • Gentle driving over potholes and speed bumps
  • Professional tyre services when needed
  • Address warning lights promptly
  • Regular vehicle servicing including TPMS health checks

Book Your TPMS Service Today

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Don't let a TPMS warning light:

  • ❌ Fail your upcoming MOT test
  • ❌ Compromise your family's safety
  • ❌ Cost you more in fuel and tyre wear
  • ❌ Leave you stranded with a tyre failure

Instead, take action now:

  • ✅ Professional diagnosis and repair
  • ✅ TPMS sensor replacement from £30 + VAT
  • ✅ Same-day service available
  • ✅ MOT-ready guarantee
  • ✅ Peace of mind on Hertfordshire roads

Ready to resolve your TPMS issues?

Call us today for expert TPMS diagnosis and repair. Our experienced team is ready to get your warning lights sorted and your vehicle MOT-ready.

Serving Stevenage and surrounding areas with professional automotive care. Your local experts for all tyre and TPMS requirements.

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This blog post provides general guidance about TPMS systems. For specific vehicle advice, always consult with qualified automotive professionals. MOT requirements may be updated by DVSA – current information available at gov.uk

Need a Garage You Can Trust in Stevenage?

At TGPP-Autocare, we offer expert repairs and servicing — from MOTs and diagnostics to wet belt replacements on EcoBoost and PureTech engines. We're RAC-approved, rated 5 stars on Google, and offer PayAssist interest-free finance to help spread the cost.

📅 Book Your Appointment Online Now
⭐⭐⭐⭐⭐ Rated 5 Stars on Google
💳 PayAssist Available — Spread the cost interest-free
TGPP Autocare Ltd
Unit 8 Chells Industrial Units,
Chells Way, Stevenage, SG2 0LQ

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🧰 RAC Approved | 🚗 Wet Belt Experts | 🔧 Full Vehicle Servicing
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© TGPP Autocare Ltd - All rights reserved. Website by TGPP.

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