₦airaland Forum

A 2011 Mercedes-Benz GLK was brought in with a no crank, no start complaint.
According to the owner, a previous technician reported that water and brake fluid had splashed onto the front fuse box (Front SAM) due to a recently installed brake master cylinder. The fuse box was removed, cleaned with fuel, dried, and reinstalled.
Since then, the vehicle has refused to crank or start.
Observed symptoms:
Dashboard lights come on normally when the key is inserted
No click from the starter at all
The electronic key feels loose in the ignition barrel
Vehicle fails to communicate properly with scan tool at times
These symptoms strongly suggest a problem in the ignition authorization path, most likely involving the Front SAM (fuse box) and/or EIS (Electronic Ignition Switch) — especially given the history of water and brake fluid exposure.
On modern Mercedes vehicles, contamination of the fuse box can disrupt:
Starter authorization
ECU power supply
CAN communication
Key recognition
This case highlights why cleaning critical control modules with fuel is risky, and why liquid exposure to fuse boxes must be handled correctly by professionals.
At Shevos Automotive Limited, we focus on proper electrical diagnosis rather than trial-and-error repairs.
If your vehicle has similar symptoms — no crank, no start, key issues, or module communication failure — feel free to send a PM with your car model, year, and symptoms.

Shevos Automotive Limited | Automotive Engineer
Accurate diagnostics • Professional repairs • No guesswork
📩 PM for proper assessment

This 2013 Hyundai Sonata was brought in with a gear shift problem — the transmission would not select gears properly. The vehicle also could not communicate with a scan tool, making diagnosis difficult.
After a detailed inspection, the issue was traced to previous electrical tampering:
The ECU wiring had been bypassed
The fuse box and wiring harness had been tampered with
Some circuits were no longer in their original configuration
These alterations disrupted communication between the ECU and the transmission system, leading to poor gear selection and scan tool communication failure.
This is a typical example of how shortcuts and unprofessional repairs can create more complex and expensive problems on modern vehicles.
At Shevos Automotive Limited, we emphasize proper diagnosis and correct repair procedures, especially on vehicles with electrical and transmission-related faults.
If your vehicle has persistent issues or has been worked on multiple times without a solution, feel free to send a PM with your car details and symptoms.
Signature:
Shevos Automotive Limited | Automotive Engineer
Accurate diagnostics • Professional repairs • No guesswork
📩 PM for proper assessment

It’s Been a While – Back to Helping with Proper Vehicle Diagnosis
It’s been a while since I last posted here.
I’ve been busy attending to vehicle diagnostics and repairs, especially cases involving misdiagnosis, wiring issues, transmission faults, and warning lights.
One thing that keeps coming up is how much damage improper repairs and shortcuts can cause on modern vehicles.
At Shevos Automotive Limited, we focus on:
Accurate vehicle diagnostics
Identifying root causes before repairs
Proper electrical and transmission fault tracing
If your car has persistent issues or has been worked on multiple times without a solution, you can send a PM with:
Car make & model
Year
Symptoms
I’ll guide you on the right diagnostic approach.
Signature:
Shevos Automotive Limited | Automotive Engineer
Accurate diagnostics • Professional repairs • No guesswork
📩 PM for proper assessment

As we begin the new year, many vehicle owners are still driving with unresolved issues—warning lights, rough gear changes, poor fuel economy, or intermittent faults.
One common mistake is carrying old problems into a new year without proper diagnosis. Replacing parts without confirming the root cause often leads to repeated failures and unnecessary expenses.
At Shevos Automotive Limited, we start the year the right way by focusing on:
Accurate vehicle diagnostics
Identifying root causes, not guessing
Professional repairs based on confirmed faults
If your car has been giving issues and you want to address it correctly this year, you can send a PM with:
Car make & model
Year
Symptoms noticed
We’ll guide you on the appropriate next step before you spend money.
Shevos Automotive Limited
Professional diagnostics • Reliable repairs • No guesswork.

Thank you for the detailed explanation.
Based on what you described on the 2010 Hyundai Elantra, there are two major concerns that need to be addressed together, not separately:
1️⃣ Abnormal transmission fluid loss
An automatic transmission should not repeatedly lose 2–4 liters of fluid. This suggests an active leak that may not be limited to just the external oil seal. Possible sources include:
Transmission oil cooler or cooler hoses
Torque converter seal
Pump seal or internal leakage
Improper fluid level check/filling procedure
If fluid keeps dropping, the transmission will slip, delay engagement, and downshift poorly, especially uphill.
2️⃣ Control / solenoid-related fault
The delayed gear engagement (about 3 seconds), poor downshifting, and the stored solenoid-related fault code indicate a possible hydraulic control issue. This could be caused by:
Low or aerated(air- conterminated) transmission fluid
Contaminated or wrong ATF specification
Faulty shift or pressure control solenoid
Internal wear due to previous low-fluid driving
Important point:
Repeatedly topping up fluid without identifying the exact leak point and confirming correct ATF type can worsen internal transmission damage.
Recommended next step:
The transmission needs a proper diagnosis, including:
Confirming the correct Hyundai-specified ATF
Pressure and leak inspection (including cooler lines)
Live data check of solenoid operation
Verification of fluid level using the correct procedure
Without this, replacing parts may not solve the issue permanently.
Pls send me a PM with:
Engine size (1.8L or 2.0L)
Exact transmission type (automatic/manual)
The specific transmission fault code
And also the name of ATF previously used on the transmission.
I’ll advise you on the best diagnostic approach before any further work is done.

Many vehicle owners are informed that no serious fault was found after scanning, yet the vehicle continues to show symptoms.

This is because standard scanning mainly retrieves stored fault codes. It does not always detect:

Abnormal live sensor data.

Transmission adaptation or control issues.

Intermittent or pending faults.

Mechanical conditions affecting electronic system.

As a result, vehicles may still experience:

Poor gear shifting.

Excessive fuel consumption.

Intermittent stalling or limp mode.

Warning lights that appear and disappear.

Proper diagnosis goes beyond code reading and involves live data analysis, system testing, and technical experience.
At Shevos Automotive Limited, we emphasize accurate fault diagnosis before repair to prevent unnecessary part replacement and repeated expenses.
If your vehicle has been scanned but the issue persists, you may send a PM with:
Vehicle make & model
Year of manufacture
Observed symptoms
We will advise you on the appropriate diagnostic approach.

Signature:
Shevos Automotive Limited | Automotive Engineer
Professional diagnostics • Reliable repairs • No guesswork
📩 PM for proper assessment .

Thanks for your message.
I’m currently based in Lagos, so coming to Ibadan may not be convenient.
Please share your car details and the problem, and I’ll guide you on the best way forward.

Many car owners complain that their vehicle has issues, yet no fault code appears when scanned. This often leads to confusion and unnecessary part replacement.

The truth is: not all vehicle faults will trigger a fault code.

Some problems are mechanical, intermittent, or data-related, and basic scanning alone may not detect them.

Common examples include:

Gear slipping or delayed shifting

Engine cutting off while driving

Poor fuel economy

Rough idling or misfiring without warning light

Intermittent limp mode


Proper diagnosis goes beyond reading fault codes. It involves checking live data, sensor behavior, mechanical condition, and system logic.

At Shevos Automotive Limited, we focus on accurate diagnosis before repair to help vehicle owners avoid unnecessary expenses and repeated repairs.

If your car has a problem but scanning shows “no fault”, you can send a PM with:

Car make & model

Year

Symptoms noticed


We’ll guide you properly before you spend money.


---


Shevos Automotive Limited | Automotive Engineer
Accurate diagnostics • Professional repairs • No guesswork
📩 Send a PM for proper assessment
What's app 09024773557.

Hello Nairalanders 👋

We are Shevos Automotive Limited, a professional automotive diagnostics service.

Many vehicles show Check Engine Light due to EVAP system faults, yet the car still drives normally. Because the system is misunderstood, parts are often changed unnecessarily.

🚗 Common EVAP symptoms:

Check Engine Light on

Fuel smell around the car

Hard starting after refueling

Poor fuel economy

Failed emissions test


🔧 Common EVAP fault codes:

P0440 | P0441 | P0442 | P0455 | P0456 | P0457

These issues may be caused by:

Loose or faulty fuel cap

Damaged EVAP hoses

Faulty purge or vent valve

Charcoal canister problems

Wiring or sensor faults


How to post your issue:
Car make/model/year + symptoms + fault codes.

📍 Lagos-based | Nationwide support
📲 WhatsApp:09024773557

Let’s diagnose EVAP problems properly, not by replacing parts blindly.
Drop your questions 👇

Hello Nairalanders 👋

We are Shevos Automotive limited, a professional automotive diagnostics and repair service.
We help car owners identify vehicle faults accurately and avoid costly trial-and-error repairs.

Our services include:

Check Engine & warning light diagnosis

Professional car scanning & fault code interpretation

Automatic transmission issues

Engine performance & electrical faults

ABS, Airbag & AC diagnosis


How to post your issue:
Car make/model/year + symptoms + fault codes (if available).

📍 Lagos-based | Nationwide support
📲 WhatsApp (diagnosis & bookings): 09024773557

Let’s diagnose, not guess.
Drop your questions 👇

All system in perfect condition 🔥(no fault).
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Price @ 27M slightly Negotiable (excluding clearing and shipping).
Dm Shevos Automotive Limited @ 09024773557, 07075750611 for more details.

Coz most times some car user's don't know the the appropriate to services the transmission.
In that case if eventually the user as exceed the service interval then it start to developed issues like this .

How often did u service your transmission?

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