Mercedes Benz W204

Hi here is my recorded step to change the fob battery (CR2025) 2  units Step 1: flip this switch to remove the physical key from the fob Step 2: pull the physical key out Step 3: User the end of the physical key as a handle to flip the inner switch of the fob, and (green arrow) slowly pull the cover, it comes out with the battery and the circuit board.

If I were to replace this last year this would have cost me RM200 to get it replace in the shop, today we can get it from the online shop and with some skill, you can have it replaced with easy. The replacement is perfect and nice, just looks so nice now.

Lately, while wife is driving and claims that she heard noise like a reversing sensor triggered, although without engaging reverse gears. Here goes the breakdowns. Symptoms: -reversing sound in cabin. -light blinking. Diagnosis: open up the back compartment to access the lights. Those light bulbs are attached to the holders. , check to see if there is burn patches...(mostly likely) For my case it is burned which is the usual case, and you will need to fixed it immediately as this is fire hazard. Parts: 1. you need: mine is the right side. (looking from the back) model A2048201600, surprisingly it all comes with bulbs attached. 2. those black connectors. (2115450328) 3. those pins ( not sure the part number, if anyone can help) I'd be gladly appreciate it. Tools: 1. wire cutter. 2. electrical tape 3. Pin remover tools 4. cloth 5.gloves. after replacing all those parts, test it , and check are those lights balance. if not , remove the other sid...

Steps: 1. insert key 2. turn until you see many indicator lights in your meter. (2 position) 3. press gas paddle for ..10 to 15 sec 4. keep your feet there, switch off ( turn key to 0 position) 5. release feet and hear small sound....(click sound) 6. done This step are to reset the way you drive to default working mode. Now when you press the gas paddle, it will be smoother.!!!... hope it helps!

This page is to explain my issues with the purge valve, this valve have to be put back to it's original location else it will create a loud knocking noise under your dashboard...intermittently....about 5mins cycle when idling. So next time..if you ever hear some noise ...check this , make sure it's at it's holder. more details at the link below. http://www.pelicanparts.com/techarticles/Mercedes-W204/61-ENGINE-Purge_Valve_Replacement/61-ENGINE-Purge_Valve_Replacement.htm