HOW TO DIAGNOSE MERCEDES A B CLASS STARTER FAULT

Simple way to diagnose not starting Mercedes.

[saifcathum]

One of the most useful videos I have seen. Let this be an example to others. Thank you.

[TenCentsMusik]

I appreciate you a lot sir because you just saved me a lot of unnecessary labour and money. I found that the purple wire was loose and so the car wasnt starting. But after doing the test on this video, it started because I used a multimeter to push it in and walla, the starter worked.

[miwka]

Man you are a genius! I just pull that 3 wire connector and then mercedes b200 started. Thanks a lot!

[isaacmambo]

This is awesome I have been having similar problem on my A170 CDI. You have really saved the world from heavy spendings to our local Garages many times they do solve problem other way round and you get home with same problems.

[jelenajelena]

I have w169 and this video solved my problem! He had same issues, starts when is cold, but not when he's been warmed up. And yes, it was starter.
YOU ARE GREAT

[johangustavsen]

I will add one comment prior to swapping the starter. A click sound may also be poor battery voltage. I had the exact sound as here and power in the purple wire, but only 10, 5v in the battery. Swapped the battery and no more start issues. My petrol 150 had an original 75ah battery, while most online suggest a lower capacity 62-64ah that might give a too low starting power.

[garyosgood]

I love your videos, your so there and no bulls hit.
Great job 👍

[matthiasendler]

Your video is pure gold! Thankfully the starter is working, so I don't have to change it. It's an ECU problem, that when the engine is "hot" there is no voltage when turning the key to start between the purple wire and the minus of the battery. So my solution is a bit hacky but it works... having a push button connecting the purple cable with plus of the battery :)

[kailash]

Hi,
Excellent video, I have a problem where my car won't crank and also won't start.
The last time it started it made a sound for 5 seconds cranking .... I'm not sure what I should look for?

Starter relay or starter motor?

All the lights and headlight starts without any issue

[Leon_Brown]

To reach the starter you must lower the subframe. To lower the subframe you must undo the steering, when you undo the steering you must be very careful because inside the steering rack there is the torque sensor which damages very easily en will cause intermittent power steering failure. Also intermittent starting failure is often caused by a bad +15 Relay which is the grey one in the relay holder behind the glovebox. You can temporaly power the +15 section by powering one of the green 30A fuses in the fusebox next to the battery. There you go and now i wil hope to get extra karma points :)

[georgesikharulidze]

Thanks for your job. I'm already desperate to find a solution

[astrologystars]

Do you have a video showing how to change a fuel pump relay on a mercedes A class 150 year 2005 .. which i believe is on passenger side so how does one get access to it.

[fredericperimon]

Hello Sir, and thank you for sharing so generously your expertise. On my W414 Vaneo 1.9 (like A190), symptoms are slightly differents : I have no click when trying to start, more like a buzz coming from the air box. I did your two tests, the bulb lights on, and it doesn't crank when bridged to +. But i have no click, just a buzz. Does this change the diagnostic of a faulty starter ? Thank you again, your video puts an end to very incomfortable weeks of searches.

[michaelsteyn]

Thanks for this video. Do you have a video showing access to or replacing the starter motor?

[TotNuAlaDin]

Thanks a lot man. You save me...you my Hero 💪🏽💪🏽💪🏽

[wouterdevilliers]

Can you show us how to replace the starter on the W169 by lowering the rear of the engine please? Petrol engines.

[royalmech]

thank you brother ..very very helpful video❤😊😊😊

[mohdanuarismail]

Hi sir, i have w245. I bridged the purple cable to positive and d car would start (ignition on). However, when i turned d ignition key without bridging, there is no power at d purple cable. I also notice that the ac blower doesnt work. What would be the problem?

[mycomment]

Dear Sir, thank you for your tutorial, I have a mercedes w168 190 benzin, 2000 model, when ever i start it in the morning, it crancks first time, then dies immediatly, the second time, it works, i have always to crank it twice, once its warm, there is no problem at all, can you help.me diagnose, fuel filter is new, oil filter, oil, throttle body and MAF cleaned thoroughly, air filter, never left it to reach quarter tank, always full, fuel pump relay is new, fuses are ok, no codes on obd 2, battery is three years old, but charging system is ok 14, 2 V, didnt play with electrics, new tps on pedal, besides, spark plugs are uni electrode sparks, bought on car part no. less than 15000km on them, Am going crazy to guess why i have to crank twice every morning, summer and I really appreciate the help.
Another thing, the fuel guage started couple of months ago not showing the full tank, even that i fill it up untill pump automatically stops, it shows up to three quarters full only, can you guide for this please. Many thanks to you, already a new subscriber to your beautiful channel

[julesofsouthafrica]

Thankyou. Where is the video for the resistor pack for the aircon switch. I have a 2003 A160 W168