Power windows in your Toyota Corolla make driving in a life quite literally a breeze. If they fail or begin to fail, it can bring upon an unnecessary headache. These troubleshooting steps and solutions should help bring you back to the glory days of cruising with windows down in your Toyota Corolla.

Here from the direct cause, we expose and go deep to the root cause of the problem by asking WHY five times.

Here we rule out other possible causes, like a bug in the code or wrong data was tracked in the first place.

This doesn’t show the actual problem, but just a perception of how some internal user saw it.

Ex. Analytics system is working correctly, just that it sometimes doesn’t get updated every 5 minutes like it’s supposed to.

5. 5th Why – Why server size was not enough to handle the spike in usage –  Because our auto-scaling is slow.

Ex. “Now analytics are always in sync and even if they miss getting updated, we get an alert to know it beforehand and take action.”

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4. 4th Why – Why CPU reached 100% – Because server instance size was not enough to handle increased number jobs.

Ex. Moved to a more sophisticated auto-scaler to manage spikes in usages and setting up alerts to monitor the performance.

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Large, vague and complicated problem is presented. The first step is to perceive all the information available at this point information of time.

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Where is the problem observed? Where is the likely cause? This will lead us to the vicinity of the root cause, which we find in step 4.

This step is fixing the root cause of the problem so that this doesn’t come up again.

2. 2nd Why – Why analytics were not updated on time – Because scheduled ETL jobs didn’t run on time.

After the countermeasure have been executed, it’s important to evaluate the effect post that. Was the problem solved?

How can we standardize the countermeasures such that similar problems are not faced again? How can we propagate our learnings across the organization?

Next step is to clarify the problem to scope it down. Go and see the problem yourself. Analyse it and get a clear understanding.

Power windows are one of life’s greater conveniences. Not everyone has them, but if they do, opening and closing power windows is push-button convenient. What if you have power windows in your car but they stop working? Today, we’re looking at the Toyota Corolla, possible power window failures and solutions.

Afterall, problem-solving is supposed to be fun and having a proper framework in place, helps us keep it that way!

Next step is to dig a little deeper and try finding the point fo cause.

As an engineer or someone people look forward to propose solutions to problems it’s beneficial to have a framework in place to solve problems effectively.

When confronted with a problem, first we want to make it crystal clear and get a grasp of the real point of cause. That’s followed by a series of 5 WHYs? to investigate the root cause. And finally countermeasures, evaluations, and countermeasures.

By asking a series of 5 whys, we can generally get to the root cause of the problem and fix it there instead of just duct-taping it and be waiting for it to rise again.

As you are seeing the problem first hand, we want to gather as much information as possible.

Recently I was reading The Toyota Way, and it suggested a framework to Practical Problem Solving. It almost felt trivial that this sort of framework would be invaluable to software engineers too (in fact for everyone).

This was my take on how we can learn from a cross-discipline organization like Toyota on how to have a process and framework in place to solve problems effectively.

We all will agree to a certain point that having a system/process for anything reduces chances of errors.

Toyota Window Problem Solved

1. 1st why – Why was data inconsistent: Because analytics didn’t get updated on time.

Power windows are one of life’s greater conveniences. Not everyone has them, but if they do, opening and closing power windows is push-button convenient. What if you have power windows in your car but they stop working? Today, we’re looking at the Toyota Corolla, possible power window failures and solutions.

Ex. “Document and standardize the process that for all our instances and jobs proper alerts must be in place so that we know when they are malfunctioning”

Power windows in your Toyota Corolla make driving in a life quite literally a breeze. If they fail or begin to fail, it can bring upon an unnecessary headache. These troubleshooting steps and solutions should help bring you back to the glory days of cruising with windows down in your Toyota Corolla.

3. 3rd Why – Why the schedule jobs didn’t run on time – Because CPU usage was 100%

Ex. So the entire analytics data was actually not consistent.

This resonates with another Toyota principle of jidokameaning building in the quality.