Hello, I have bmw 335xi 2007 october build e92 n54. New water pumpa nd thermostat, checked volatgae to two oragnge wires before pump and 11.7 volt, new battery slgihty dips, battery at 14+ volts when on, front post 14+ volts when on, Question is: How many volts should pin 1,2,3,4 be to test at the water pump connector? after that before assuming anything, This means battery charger or tender for. about 5 plus hours. With a surface charge the battery can read around 13 volts when fully charged. but on the first start it will generally fall to 12.6 on a good battery . These cars genrally can have funny jump reactions. BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > E90 will not start after new battery Google Search Search Forums There are several possible causes. 1) Too many short trips. 2) Charging system is inadequate or has failed. 3) There is a parasitic load discharging the battery when engine is not running. 4) You have accessories connected directly to the battery, defeating BMW's energy management system. 5) You have a bad battery. Earliest that you'll encounter this issue is around 60k miles (for me it was at 59,8xx one month ago). You'll get yellow/orange t-stat (overheat) warning then red and next will be the low coolant light (pictured by OP). For the record, you're looking at a $1000-2000 if you're experiencing a water pump & T-stat failure. Always check to see if you have a strong battery before doing anything else . The IBS system can turn things off when the battery is weak and cause symptoms that are not directly related to the real problem a weak battery or charging system problems. Also cold is hard on batterys. electical e90 pdf 6 days ago · The fifth-generation BMW 320i, also known as the E90/E91/E92/E93, was produced from 2005 to 2013. It was available in sedan, coupe, convertible, and wagon body styles and was powered by a range of four-cylinder and six-cylinder engines, including a 2.0-liter four-cylinder engine and a 3.0-liter six-cylinder engine in the BMW 335i model. As far as I have red in forums, I have come to several possible causes of lack of power which might be related either to bad fuel supply or bad air supply: 1. Bad MAF sensor, so engine might not be able to calculate correct amount of air entering the combustion chambers; 2. Vacuum leak or bad DISA valve, allowing less air to enter the chambers .

bmw e90 low battery symptoms